Political party strength in Colorado: Difference between revisions

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{{Short description|Elected officials}}{{More citations needed|date=January 2021}}
The following table indicates the party of elected officials in the [[U.S. state]] of [[Colorado]]:
*[[Governor of Colorado|Governor]]
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{| class="wikitable" style="text-align:center"
|- style="height:2em"
! rowspan="2" |Year!! colspan="4" |Executive offices!! colspan="2" |[[List of Colorado state legislatures#Legislative Assembly of the Territory of Colorado|Territorial Assembly]]
![[United States congressional delegations from Colorado|United StatesU.S. Congress]]
|- style="height:2em"
![[Governor of Colorado|Governor]]!![[Secretary of State of Colorado|Secretary of State]]!![[Colorado Attorney General|Attorney General]]!![[Colorado State Treasurer|Treasurer]]!!Territorial Council!![[Colorado House of Representatives|House]]!![[Colorado Territory's at-large congressional district|Delegate]]
|- style="height:2em"
!1861
| rowspan="2" {{Party shading/Republican}} |[[William Gilpin (governor)|William Gilpin]] <small>(R)</small>{{efn|The territory was formed on February 28, 1861, but no governor was appointed until March 25, 1861. Gilpin himself did not arrive in the territory until May 27, 1861. Removed from office for improper financial drafts from the federal treasury.}}
| rowspan="2" {{Party shading/Nonpartisan}} |[[Lewis Ledyard Weld]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |[[James E. Dalliba]] <small>(R)</small>
| rowspan="3" {{Party shading/Republican}} |[[George T. Clark]] <small>(R)</small>
|{{Data missing|?|date=July 2021}}
|{{Data missing|?|date=July 2021}}
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|- style="height:2em"
!1863
| rowspan="3" {{Party shading/Republican}} |[[John Evans (Colorado governorpolitician)|John Evans]] <small>(R)</small>{{efn|Resigned at the request, made July 18, 1865, of President [[Andrew Johnson]] following the [[Sand Creek massacre]].}}
| rowspan="3" {{Party shading/Republican}} |[[Samuel Hitt Elbert]] <small>(R)</small>
| rowspan="3" {{Party shading/Republican}} |[[Samuel E. Brown]] <small>(R)</small>
|- style="height:2em"
!1864
| rowspan="2" {{Party shading/Nonpartisan}} |[[Alexander W. Atkins]] <small>(NP)</small>
|{{Data missing|?|date=July 2021}}
|{{Data missing|?|date=July 2021}}
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|{{Data missing|?|date=July 2021}}
|{{Data missing|?|date=July 2021}}
| rowspan="2" {{Party shading/Republican}} |[[Allen Alexander Bradford]] <small>(R)</small>
|- style="height:2em"
!1866
| rowspan="2" {{Party shading/Republican}} |[[Alexander Cummings (territorial governor)|Alexander Cummings]] <small>(R)</small>
| rowspan="8" {{Party shading/Nonpartisan}} |[[Frank Hall (Colorado politician)|Frank Hall]] <small>(NP)</small>
| rowspan="4" {{Party shading/Republican}} |[[George W. Chamberlain]] <small>(R)</small>
| {{Party shading/Nonpartisan}} |[[Alexander Cameron Hunt]] <small>(NP)</small>
|{{Data missing|?|date=July 2021}}
|{{Data missing|?|date=July 2021}}
|- style="height:2em"
!1867
| {{Party shading/Nonpartisan}} |[[John Wanless]] <small>(NP)</small>
|{{Data missing|?|date=July 2021}}
|{{Data missing|?|date=July 2021}}
| rowspan="2" {{Party shading/Republican}} |[[George M. Chilcott]] <small>(R)</small>
|- style="height:2em"
!1868
| rowspan="2" {{Party shading/Independent (United States)}} |[[Alexander Cameron Hunt]] <small>(I)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Columbus Nuckolls]] <small>(NP)</small>
| rowspan="2" |{{Data missing|?|date=July 2021}}
| rowspan="2" |{{Data missing|?|date=July 2021}}
|- style="height:2em"
!1869
| rowspan="2" {{Party shading/Republican}} |[[Allen Alexander Bradford]] <small>(R)</small>
|- style="height:2em"
!1870
| rowspan="3" {{Party shading/Republican}} |[[Edward M. McCook]] <small>(R)</small>{{efn|Removed from office by petition.}}
| rowspan="3" {{Party shading/Republican}} |[[Henry C. Thatcher]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[George T. Clark]] <small>(R)</small>
| rowspan="2" |{{Data missing|?|date=July 2021}}
| rowspan="2" |{{Data missing|?|date=July 2021}}
|- style="height:2em"
!1871
| rowspan="4" {{Party shading/Republican}} |[[Jerome B. Chaffee]] <small>(R)</small>
|- style="height:2em"
!1872
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|- style="height:2em"
!1873
| {{Party shading/Independent (United States)}} |[[Samuel Hitt Elbert]] <small>(I)</small>{{efn|Records show Elbert served "less than a year", but his successor was appointed on June 19, 1874, which was 14 months after Elbert took office.}}
| rowspan="3" |''vacant''{{efn|Position was filled by the [[U.S. Attorney]] due to lack of funding by the territorial government.}}
|- style="height:2em"
!1874
| {{Party shading/Republican}} |[[Edward M. McCook]] <small>(R)</small>
| {{Party shading/Nonpartisan}} |[[John W. Jenkins]] <small>(NP)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[David Moffat|David H. Moffat]] <small>(NP)</small>
|{{Data missing|?|date=July 2021}}
|{{Data missing|?|date=July 2021}}
|- style="height:2em"
!1875
| {{Party shading/Republican}} |[[John Long Routt]] <small>(R)</small>
| {{Party shading/Nonpartisan}} |[[John Taffe (Colorado politician)|John Taffe]] <small>(NP)</small>
|{{Data missing|?|date=July 2021}}
|{{Data missing|?|date=July 2021}}
| {{Party shading/Democratic}} |[[Thomas M. Patterson]] <small>(D)</small>
|- style="height:2em"
! rowspan="2" |Year!![[Governor of Colorado|Governor]]!![[Secretary of State of Colorado|Secretary of State]]!![[Colorado Attorney General|Attorney General]]!!Treasurer!!Territorial Council!![[Colorado House of Representatives|House]]!![[List of United States representatives from Colorado|Delegate]]
|- style="height:2em"
! colspan="4" |Executive offices!! colspan="2" |[[Colorado General Assembly|Territorial Assembly]]
![[United States congressional delegations from Colorado|United States Congress]]
|}
 
== 1876–present ==
{{sticky header}}
{| class="wikitable sortable sticky-header-multi" style="text-align:center"
|- style="height:2em"
! rowspan="2" class=unsortable | Year!! colspan="5" |Executive offices!! colspan="2" |[[Colorado General Assembly|General Assembly]]!! colspan="3" |[[United States congressional delegations from Colorado|United States Congress]]!! rowspan="2" class=unsortable | [[United States presidential election|Electoral votes]]
|- style="height:2em"
! class=unsortable | [[Governor of Colorado|Governor]]!! class=unsortable | [[List of lieutenant governors of Colorado|Lieutenant<br />Governor]]!! class=unsortable | [[Secretary of State of Colorado|Secretary<br />of State]]!! class=unsortable | [[Colorado Attorney General|Attorney<br />General]]!! class=unsortable | [[Colorado State Treasurer|Treasurer]]!! class=unsortable | [[Colorado Senate|State Senate]]!! class=unsortable | [[Colorado House of Representatives|State House]]!! class=unsortable | [[List of United States senators from Colorado|U.S. Senator<br />(Class II)]]!! class=unsortable | [[List of United States senators from Colorado|U.S. Senator<br />(Class III)]]!! class=unsortable | [[List of United States representatives from Colorado|U.S. House]]
|- style="height:2em"
!1876
| rowspan="3" {{Party shading/Republican}} |[[John Long Routt]] <small>(R)</small>
| rowspan="3" {{Party shading/Republican}} |[[Lafayette Head]] <small>(R)</small>
| rowspan="3" {{Party shading/Republican}} |[[William Clark (Colorado politician)|William Clark]] <small>(R)</small>
|''vacant''
| {{Party shading/Nonpartisan}} |[[Fred Z. Solomon]] <small>(NP)</small>
| rowspan="5" {{Party shading/Republican}} |19R, 7D
| rowspan="3" {{Party shading/Republican}} |31R, 18D
| rowspan="6" {{Party shading/Republican}} |[[Henry M. Teller]] <small>(R)</small>
| rowspan="3" {{Party shading/Republican}} |[[Jerome B. Chaffee]] <small>(R)</small>
| {{Party shading/Republican}} |[[James B. Belford|James B.<br />Belford]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Rutherford B. Hayes|Hayes]]/<br />[[William A. Wheeler|Wheeler]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1877
| rowspan="2" {{Party shading/Republican}} |[[A. J. Sampson]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[George C. Corning]] <small>(NP)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Thomas M. Patterson|Thomas M.<br />Patterson]] <small>(D)</small>
|- style="height:2em"
!1878
|- style="height:2em"
!1879
| rowspan="4" {{Party shading/Republican}} |[[Frederick Walker Pitkin]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Horace Tabor]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Norman H. Meldrum]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Charles W. Wright]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Nathan C. Culver]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |36R, 12D, 1GB
| rowspan="7" {{Party shading/Republican}} |[[Nathaniel P. Hill]] <small>(R)</small>
| rowspan="7" {{Party shading/Republican}} |[[James B. Belford|James B.<br />Belford]] <small>(R)</small>
|- style="height:2em"
!1880
| rowspan="5" {{Party shading/Republican}} |[[James A. Garfield|Garfield]]/<br />[[Chester A. Arthur|Arthur]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1881
| rowspan="2" {{Party shading/Republican}} |[[Charles H. Toll]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[W. C. Sanders]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |23R, 3D
| rowspan="5" {{Party shading/Republican}} |36R, 13D
|- style="height:2em"
!1882
| {{Party shading/Republican}} |[[George M. Chilcott]] <small>(R)</small>
|- style="height:2em"
! rowspan="2" |1883
| rowspan="3" {{Party shading/Democratic}} |[[James Benton Grant]] <small>(D)</small>
| rowspan="3" {{Party shading/Republican}} |[[William H. Meyer (Colorado politician)|William H. Meyer]] <small>(R)</small>
| rowspan="5" {{Party shading/Republican}} |[[Melvin Edwards (politician)|Melvin Edwards]] <small>(R)</small>
| rowspan="3" {{Party shading/Republican}} |[[David F. Urmy]] <small>(R)</small>
| rowspan="3" {{Party shading/Nonpartisan}} |[[Fred Walsen]] <small>(NP)</small>
| rowspan="3" {{Party shading/Republican}} |17R, 9D
| {{Party shading/Republican}} |[[Horace Tabor]] <small>(R)</small>
|- style="height:2em"
| rowspan="6" {{Party shading/Republican}} |[[Thomas M. Bowen]] <small>(R)</small>
|- style="height:2em"
!1884
| rowspan="4" {{Party shading/Republican}} |[[James G. Blaine|Blaine]]/<br />[[John A. Logan|Logan]] <small>(R)</small> {{nay}}
|- style="height:2em"
!1885
| rowspan="2" {{Party shading/Republican}} |[[Benjamin Harrison Eaton]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Peter W. Breene]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Theodore H. Thomas]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[George R. Swallow]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |19R, 7D
| rowspan="2" {{Party shading/Republican}} |35R, 13D, 1I
| rowspan="12" {{Party shading/Republican}} |[[Henry M. Teller]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} | [[George G. Symes|George G.<br />Symes]] <small>(R)</small>
|- style="height:2em"
!1886
|- style="height:2em"
!1887
| rowspan="2" {{Party shading/Democratic}} |[[Alva Adams (governor)|Alva Adams]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |[[Norman H. Meldrum]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[James Rice (Colorado politician)|James Rice]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |Alvin Marsh <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Peter W. Breene]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |18R, 8D
| rowspan="2" {{Party shading/Republican}} |25R, 23D, 1I
|- style="height:2em"
!1888
| rowspan="4" {{Party shading/Republican}} |[[Benjamin Harrison|Harrison]]/<br />[[Levi P. Morton|Morton]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1889
| rowspan="2" {{Party shading/Republican}} |[[Job Adams Cooper]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[William Grover Smith]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Samuel W. Jones]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[William Brisbane (Colorado politician)|William Brisbane]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |20R, 6D
| rowspan="2" {{Party shading/Republican}} |43R, 6D
| rowspan="12" {{Party shading/Republican}} |[[Edward O. Wolcott]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Hosea Townsend|Hosea<br />Townsend]] <small>(R)</small>
|- style="height:2em"
!1890
|- style="height:2em"
!1891
| rowspan="2" {{Party shading/Republican}} |[[John Long Routt]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[William Story (attorney)|William Story]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Edward J. Eaton]] <small>(R)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Joseph H. Maupin]] <small>(D)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[James N. Carlile]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |16R, 10D
| rowspan="2" {{Party shading/Republican}} |32R, 17D
|- style="height:2em"
!1892
| rowspan="4" {{Party shading/Populist}} |[[James B. Weaver|Weaver]]/<br />[[James G. Field|Field]] <small>(Pop)</small> {{nay}}
|- style="height:2em"
!1893
| rowspan="2" {{Party shading/Populist}} |[[Davis Hanson Waite]] <small>(Pop)</small>
| rowspan="2" {{Party shading/Populist}} |[[David H. Nichols]] <small>(Pop)</small>
| rowspan="2" {{Party shading/Populist}} |[[Nelson O. McCless]] <small>(Pop)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Eugene Engley]] <small>(D)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Albert Nance]] <small>(NP)</small>
| rowspan="2" {{Party shading/Fusion}} |15R, 12Pop, 8D{{efn|A coalition of Democrats and Populists elected a Democrat, Casimiro Barela, as President Pro Tempore and organized the chamber.<ref>{{Cite webbook|title=Senate journal of the General Assembly of the State of Colorado. 1894.|url=http://babel.hathitrust.org/cgi/pt?id=uc1.b2882771;view=1up;seq=22|access-date=2021-06-20|websitevia=HathiTrust|language=en|page=16-17}}</ref>}}
| rowspan="2" {{Party shading/Republican}} |33R, 27Pop, 5D
| rowspan="2" {{Party shading/Populist}} |2P
|- style="height:2em"
!1894
|- style="height:2em"
!1895
| rowspan="2" {{Party shading/Republican}} |[[Albert McIntire]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Jared L. Brush]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Albert B. McGaffey]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Byron L. Carr]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Harry E. Mulnix]] <small>(NP)</small>
| rowspan="2" {{Party shading/Populist}} |18Pop, 16R, 1D
| rowspan="2" {{Party shading/Republican}} |41R, 14Pop, 10D
| rowspan="2" {{Party shading/Tie}} |1Pop, 1R
|- style="height:2em"
!1896
| rowspan="4" {{Party shading/Coalition}} |[[William Jennings Bryan|Bryan]]/<br />[[Arthur Sewall|Sewall]] <small>(D/SvR)</small> {{nay}}
|- style="height:2em"
!1897
| rowspan="2" {{Party shading/Democratic}} |[[Alva Adams (governor)|Alva Adams]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Charles H.S. Whipple]] <small>(D)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[George W. Kephart]] <small>(NP)</small>
| rowspan="2" {{Party shading/Fusion}} |16R, 14Pop, 4D, 1SvR{{efn|A coalition of Democrats, Populists, Silver Republicans elected a Populist, [[Francis Patrick Carney]], as President Pro Tempore and organized the chamber.<ref>{{Cite webbook|title=Senate journal of the General Assembly of the State of Colorado. 1897 AND EXTRA.|url=http://babel.hathitrust.org/cgi/pt?id=uc1.b2882773;view=1up;seq=24|access-date=2021-06-20|websitevia=HathiTrust|language=en|page=8}}</ref>}}
| rowspan="2" {{Party shading/Populist}} |33Pop, 20D, 11R, 1SvR
| rowspan="6" {{Party shading/Silver Republican}} |[[Henry M. Teller]] <small>(SvR)</small>
| rowspan="6" {{Party shading/Tie}} |1Pop, 1SvR
|- style="height:2em"
!1898
|- style="height:2em"
!1899
| rowspan="2" {{Party shading/Democratic}} |[[Charles S. Thomas]] <small>(D)</small>
| rowspan="2" {{Party shading/Populist}} |[[Francis Patrick Carney]] <small>(PPop)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Elmer F. Beckwith]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[David M. Campbell]] <small>(D)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[John H. Fesler]] <small>(NP)</small>
| rowspan="2" {{Party shading/Silver Republican}} |15SvR, 9Pop, 9D, 2R{{efn|A coalition of Democrats, Populists, Silver Republicans elected a Silver Republican, John R. Schermerhorn, as President Pro Tempore and organized the chamber.<ref>{{Cite book|last=Senate|first=Colorado General Assembly|url=https://books.google.com/books?id=cpklAQAAIAAJ&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false|title=Senate Journal of the General Assembly of the State of Colorado|date=1899|language=en|page=8}}</ref>}}
| rowspan="2" {{Party shading/Fusion}} |21D, 20Pop, 16SvR, 6R{{efn|A coalition of Democrats, Populists, Silver Republicans elected a Silver Republican, [[William Grover Smith]], as Speaker and organized the chamber.<ref>{{Cite web|title=House journal. 1899.|url=http://babel.hathitrust.org/cgi/pt?id=uc1.b2882412;view=1up;seq=14|access-date=2021-06-20|website=HathiTrust|language=en|page=6}}</ref>}}
|- style="height:2em"
!1900
| rowspan="4" {{Party shading/Democratic}} |[[William Jennings Bryan|Bryan]]/<br />[[Adlai Stevenson I|Stevenson]] <small>(D)</small> {{nay}}
|- style="height:2em"
!1901
| rowspan="2" {{Party shading/Democratic}} |[[James Bradley Orman]] <small>(D)</small>
| {{Party shading/Democratic}} |[[David C. Coates]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[David A. Mills]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |[[Charles C. Post]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[James N. Chipley]] <small>(NP)</small>
| rowspan="2" {{Party shading/Democratic}} |19D, 7Pop, 6SvR, 2R, 1{{abbr|ST|Single Tax}}
| rowspan="2" {{Party shading/Democratic}} |37D, 13Pop, 8SvR, 7R
| rowspan="8" {{Party shading/Democratic}} |[[Thomas M. Patterson]] <small>(D)</small>
|- style="height:2em"
!1902
| {{Party shading/Republican}} |[[Warren A. Haggott]] <small>(R)</small>
|- style="height:2em"
!1903
| rowspan="2" {{Party shading/Republican}} |[[James Hamilton Peabody]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Jesse Fuller McDonald]] <small>(R)</small>
| rowspan="6" {{Party shading/Republican}} |[[James Cowie (politician)|James Cowie]] <small>(R)</small>
| rowspan="6" {{Party shading/Republican}} |[[Nathan C. Miller]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Whitney Newton]] <small>(NP)</small>
| rowspan="2" {{Party shading/Democratic}} |24D, 11R
| rowspan="6" {{Party shading/Republican}} |36R, 29D
| rowspan="8" {{Party shading/Democratic}} |[[Henry M. Teller]] <small>(D)</small>
| {{Party shading/Republican}} |2R, 1D
|- style="height:2em"
!1904
| rowspan="7" {{Party shading/Republican}} |3R
| rowspan="6" {{Party shading/Republican}} |[[Theodore Roosevelt|Roosevelt]]/<br />[[Charles W. Fairbanks|Fairbanks]] <small>(R)</small> {{aye}}
|- style="height:2em"
! rowspan="3" |1905
| {{Party shading/Democratic}} |[[Alva Adams (governor)|Alva Adams]] <small>(D)</small>{{efn|name=3in1day|The 1904 election was rife with fraud and controversy. Adams took office, but soon afterwards the Republican-majority state legislature declared James Peabody to be the actual winner, on the condition that Peabody immediately resign. Since Peabody had been governor for a few moments before resigning, it was his lieutenant governor, Jesse McDonald, that succeeded to the governorship. In all, Colorado had three governors on March 17, 1905.}}
| {{Party shading/Democratic}} |[[Arthur Cornforth]] <small>(D)</small>
| rowspan="4" {{Party shading/Nonpartisan}} |[[John A. Holmbert]] <small>(NP)</small>
| rowspan="4" {{Party shading/Republican}} |19R, 16D
|- style="height:2em"
| {{Party shading/Republican}} |[[James Hamilton Peabody]] <small>(R)</small>{{efn|name=3in1day}}
| {{Party shading/Republican}} |[[Jesse Fuller McDonald]] <small>(R)</small>
|- style="height:2em"
| rowspan="2" {{Party shading/Republican}} |[[Jesse Fuller McDonald]] <small>(R)</small>{{efn|name=3in1day}}
| rowspan="2" {{Party shading/Republican}} |[[Fred W. Parks]] <small>(R)</small>
|- style="height:2em"
!1906
|- style="height:2em"
!1907
| rowspan="2" {{Party shading/Republican}} |[[Henry Augustus Buchtel]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Erastus Harper]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Timothy O'Connor (Colorado politician)|Timothy O'Connor]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[William H. Dickson]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Alfred E. Bent]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |24R, 11D
| rowspan="2" {{Party shading/Republican}} |46R, 19D
| rowspan="6" {{Party shading/Republican}} |[[Simon Guggenheim]] <small>(R)</small>
|- style="height:2em"
!1908
| rowspan="4" {{Party shading/Democratic}} |[[William Jennings Bryan|Bryan]]/<br />[[John W. Kern|Kern]] <small>(D)</small> {{nay}}
|- style="height:2em"
!1909
| rowspan="4" {{Party shading/Democratic}} |[[John F. Shafroth]] <small>(D)</small>
| rowspan="6" {{Party shading/Democratic}} |[[Stephen R. Fitzgarrald]] <small>(D)</small>
| rowspan="6" {{Party shading/Democratic}} |[[James B. Pearce]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[John T. Barnett]] <small>(D)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[W. J. Galligan]] <small>(NP)</small>
| rowspan="2" {{Party shading/Democratic}} |20D, 15R
| rowspan="2" {{Party shading/Democratic}} |53D, 12R
| rowspan="2" {{Party shading/Democratic}} |[[Charles J. Hughes Jr.]] <small>(D)</small>
| rowspan="4" {{Party shading/Democratic}} |3D
|- style="height:2em"
!1910
|- style="height:2em"
!1911
| rowspan="2" {{Party shading/Republican}} |[[Benjamin Griffith]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Roady Kenehan]] <small>(NP)</small>
| rowspan="2" {{Party shading/Democratic}} |26D, 9R
| rowspan="2" {{Party shading/Democratic}} |40D, 25R
| rowspan="2" |''vacant''
|- style="height:2em"
!1912
| rowspan="8" {{Party shading/Democratic}} |[[Woodrow Wilson|Wilson]]/<br />[[Thomas R. Marshall|Marshall]] <small>(D)</small> {{aye}}
|- style="height:2em"
!1913
| rowspan="2" {{Party shading/Democratic}} |[[Elias M. Ammons]] <small>(D)</small>
| rowspan="4" {{Party shading/Democratic}} |[[Fred Farrar (politician)|Fred Farrar]] <small>(D)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[M. A. Leddy]] <small>(NP)</small>
| rowspan="2" {{Party shading/Democratic}} |24D, 11R
| rowspan="2" {{Party shading/Democratic}} |48D, 17R
| rowspan="6" {{Party shading/Democratic}} |[[John F. Shafroth]] <small>(D)</small>
| rowspan="8" {{Party shading/Democratic}} |[[Charles S. Thomas]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |4D
|- style="height:2em"
!1914
|- style="height:2em"
!1915
| rowspan="2" {{Party shading/Republican}} |[[George Alfred Carlson]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Moses E. Lewis]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[John E. Ramer]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Allison Stocker]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |18R, 17D
| rowspan="2" {{Party shading/Republican}} |36R, 29D
| rowspan="4" {{Party shading/Democratic}} |3D, 1R
|- style="height:2em"
!1916
|- style="height:2em"
!1917
| rowspan="2" {{Party shading/Democratic}} |[[Julius Caldeen Gunter]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[James Pulliam]] <small>(D)</small>
| rowspan="4" {{Party shading/Democratic}} |[[James R. Noland]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Leslie E. Hubbard]] <small>(D)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[Robert H. Higgins]] <small>(NP)</small>
| rowspan="2" {{Party shading/Democratic}} |18D, 17R
| rowspan="2" {{Party shading/Democratic}} |45D, 20R
|- style="height:2em"
!1918
|- style="height:2em"
!1919
| rowspan="4" {{Party shading/Republican}} |[[Oliver Henry Shoup]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[George Stephan]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Victor E. Keyes]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |Harry E. Mulnix <small>(NP)</small>
| rowspan="2" {{Party shading/Democratic}} |21D, 14R
| rowspan="2" {{Party shading/Republican}} |41R, 24D
| rowspan="12" {{Party shading/Republican}} |[[Lawrence C. Phipps]] <small>(R)</small>
| rowspan="8" {{Party shading/Republican}} |3R, 1D
|- style="height:2em"
!1920
| rowspan="4" {{Party shading/Republican}} |[[Warren G. Harding|Harding]]/<br />[[Calvin Coolidge|Coolidge]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1921
| rowspan="2" {{Party shading/Republican}} |[[Earl Cooley (politician)|Earl Cooley]] <small>(R)</small>
| rowspan="6" {{Party shading/Republican}} |[[Carl Miliken]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |Arthur Strong <small>(NP)</small>
| rowspan="4" {{Party shading/Republican}} |24R, 11D
| rowspan="2" {{Party shading/Republican}} |58R, 7D
| rowspan="2" {{Party shading/Republican}} |[[Samuel D. Nicholson]] <small>(R)</small>
|- style="height:2em"
!1922
|- style="height:2em"
!1923
| rowspan="2" {{Party shading/Democratic}} |[[William Ellery Sweet]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |[[Robert F. Rockwell]] <small>(R)</small>
| {{Party shading/Democratic}} |[[Russel W. Fleming]] <small>(D)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |Harry E. Mulnix <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |33R, 32D
| {{Party shading/Democratic}} |[[Alva B. Adams]] <small>(D)</small>
|- style="height:2em"
!1924
| {{Party shading/Democratic}} |[[Wayne C. Williams]] <small>(D)</small>
| rowspan="3" {{Party shading/Republican}} |[[Rice W. Means]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Calvin Coolidge|Coolidge]]/<br />[[Charles G. Dawes|Dawes]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1925
| rowspan="2" {{Party shading/Republican}} |[[Clarence Morley]] <small>(R)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Sterling Byrd Lacy]] <small>(D)</small>
| rowspan="4" {{Party shading/Republican}} |[[William Boatright]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[W. D. MacGinnis]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |21R, 14D
| rowspan="2" {{Party shading/Republican}} |53R, 12D
|- style="height:2em"
!1926
|- style="height:2em"
!1927
| rowspan="6" {{Party shading/Democratic}} |[[Billy Adams (politician)|Billy Adams]] <small>(D)</small>
| rowspan="4" {{Party shading/Republican}} |[[George Milton Corlett]] <small>(R)</small>
| rowspan="8" {{Party shading/Republican}} |[[Charles Armstrong (Colorado politician)|Charles Armstrong]] <small>(R)</small>
| {{Party shading/Nonpartisan}} |Harry E. Mulnix <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |20R, 15D
| rowspan="2" {{Party shading/Republican}} |43R, 22D
| rowspan="5" {{Party shading/Republican}} |[[Charles W. Waterman]] <small>(R)</small>
| rowspan="2" {{Party shading/Tie}} |2R, 2D
|- style="height:2em"
!1928
| {{Party shading/Nonpartisan}} |[[Herbert Fairall]] <small>(NP)</small>
| rowspan="4" {{Party shading/Republican}} |[[Herbert Hoover|Hoover]]/<br />[[Charles Curtis|Curtis]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1929
| {{Party shading/Republican}} |[[Robert E. Winbourn]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |W. D. MacGinnis <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |24R, 11D
| rowspan="2" {{Party shading/Republican}} |46R, 19D
| rowspan="4" {{Party shading/Republican}} |3R, 1D
|- style="height:2em"
!1930
| {{Party shading/Republican}} |[[John S. Underwood]] <small>(R)</small>
|- style="height:2em"
!1931
| rowspan="2" {{Party shading/Democratic}} |[[Edwin C. Johnson]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |[[Clarence L. Ireland]] <small>(R)</small>
| rowspan="2" {{Party shading/Nonpartisan}} |[[John M. Jackson (Colorado politician)|John M. Jackson]] <small>(NP)</small>
| rowspan="2" {{Party shading/Republican}} |22R, 13D
| rowspan="2" {{Party shading/Democratic}} |34D, 31R
| rowspan="6" {{Party shading/Democratic}} |[[Edward P. Costigan]] <small>(D)</small>
|- style="height:2em"
!1932
| {{Party shading/Democratic}} |[[Walter Walker (politician)|Walter Walker]] <small>(D)</small>
| rowspan="9" {{Party shading/Democratic}} |[[Franklin D. Roosevelt|Roosevelt]]/<br />[[John Nance Garner|Garner]] <small>(D)</small> {{aye}}
|- style="height:2em"
!1933
| rowspan="4" {{Party shading/Democratic}} |Edwin C. Johnson <small>(D)</small>{{efn|Resigned to take elected seat in the [[List of United States senators from Colorado#Class 2|United States Senate]].}}
| rowspan="4" {{Party shading/Democratic}} |[[Ray Herbert Talbot]] <small>(D)</small>
| rowspan="3" {{Party shading/Democratic}} |[[Paul P. Prosser]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Homer Bedford]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |26D, 9R
| rowspan="2" {{Party shading/Democratic}} |54D, 11R
| {{Party shading/Republican}} |[[Karl C. Schuyler]] <small>(R)</small>
| rowspan="9" {{Party shading/Democratic}} |4D
|- style="height:2em"
!1934
| rowspan="8" {{Party shading/Democratic}} |Alva B. Adams <small>(D)</small>
|- style="height:2em"
!1935
| {{Party shading/Democratic}} |[[James Carr (Colorado politician)|James Carr]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |[[Charles Armstrong (Colorado politician)|Charles Armstrong]] <small>(R)</small>
| rowspan="5" {{Party shading/Democratic}} |29D, 6R
| rowspan="5" {{Party shading/Democratic}} |50D, 15R
|- style="height:2em"
!1936
| rowspan="6" {{Party shading/Democratic}} |[[George Saunders (politician)|George Saunders]] <small>(D)</small>
| rowspan="6" {{Party shading/Democratic}} |[[Byron G. Rogers]] <small>(D)</small>
|- style="height:2em"
! rowspan="2" |1937
| {{Party shading/Democratic}} |[[Ray Herbert Talbot]] <small>(D)</small>{{efn|name=ltfilled|As lieutenant governor, filled unexpired term.}}
|''vacant''
| rowspan="3" {{Party shading/Democratic}} |[[Homer Bedford]] <small>(D)</small>
| rowspan="20" {{Party shading/Democratic}} |[[Edwin C. Johnson]] <small>(D)</small>
|- style="height:2em"
| rowspan="2" {{Party shading/Democratic}} |[[Teller Ammons]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Frank Hayes (unionist)|Frank J. Hayes]] <small>(D)</small>
|- style="height:2em"
!1938
|- style="height:2em"
!1939
| rowspan="4" {{Party shading/Republican}} |[[Ralph Lawrence Carr]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[John Charles Vivian]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |Charles Armstrong <small>(R)</small>
| rowspan="2" {{Party shading/Democratic}} |23D, 12R
| rowspan="4" {{Party shading/Republican}} |37R, 28D
|- style="height:2em"
!1940
| rowspan="4" {{Party shading/Republican}} |[[Wendell Willkie|Willkie]]/<br />[[Charles L. McNary|McNary]] <small>(R)</small> {{nay}}
|- style="height:2em"
!1941
| rowspan="8" {{Party shading/Republican}} |[[Walter Morrison (politician)|Walter Morrison]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Gail L. Ireland]] <small>(R)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Homer Bedford]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |18D, 17R
| rowspan="17" {{Party shading/Republican}} |[[Eugene Millikin]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |3R, 1D
|- style="height:2em"
!1942
|- style="height:2em"
!1943
| rowspan="4" {{Party shading/Republican}} |John Charles Vivian <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[William Eugene Higby]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Leon Lavington]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |23R, 12D
| rowspan="2" {{Party shading/Republican}} |55R, 10D
| rowspan="4" {{Party shading/Republican}} |4R
|- style="height:2em"
!1944
| rowspan="4" {{Party shading/Republican}} |[[Thomas E. Dewey|Dewey]]/<br />[[John W. Bricker|Bricker]] <small>(R)</small> {{nay}}
|- style="height:2em"
!1945
| rowspan="4" {{Party shading/Republican}} |[[H. Lawrence Hinkley]] <small>(R)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Homer Bedford]] <small>(D)</small>
| rowspan="4" {{Party shading/Republican}} |27R, 8D
| rowspan="4" {{Party shading/Republican}} |46R, 19D
|- style="height:2em"
!1946
|- style="height:2em"
!1947
| rowspan="4" {{Party shading/Democratic}} |[[William Lee Knous]] <small>(D)</small>{{efn|Resigned to take a seat on the [[United States District Court for the District of Colorado]].}}
| rowspan="2" {{Party shading/Democratic}} |[[Homer L. Pearson]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |[[Rodney Anderson (Colorado politician)|Rodney Anderson]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |3R, 1D
|- style="height:2em"
!1948
| rowspan="5" {{Party shading/Democratic}} |[[Harry S. Truman|Truman]]/<br />[[Alben W. Barkley|Barkley]] <small>(D)</small>
|- style="height:2em"
!1949
| rowspan="2" {{Party shading/Democratic}} |[[Walter Walford Johnson]] <small>(D)</small>
| rowspan="5" {{Party shading/Democratic}} |[[George Baker (Colorado politician)|George Baker]] <small>(D)</small>
| rowspan="3" {{Party shading/Democratic}} |[[John W. Metzger]] <small>(D)</small>
| rowspan="3" {{Party shading/Democratic}} |[[Homer Bedford]] <small>(D)</small>
| rowspan="3" {{Party shading/Republican}} |19R, 16D
| rowspan="3" {{Party shading/Democratic}} |39D, 26R
| rowspan="3" {{Party shading/Democratic}} |3D, 1R
|- style="height:2em"
! rowspan="2" |1950
|- style="height:2em"
| {{Party shading/Democratic}} |[[Walter Walford Johnson]] <small>(D)</small>{{efn|name=ltfilled}}
| {{Party shading/Republican}} |[[Charles P. Murphy]] <small>(R)</small>
|- style="height:2em"
!1951
| rowspan="4" {{Party shading/Republican}} |[[Daniel I. J. Thornton]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Gordon Allott]] <small>(R)</small>
| rowspan="24" {{Party shading/Republican}} |[[Duke W. Dunbar]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[Earl E. Ewing]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |20R, 15D
| rowspan="2" {{Party shading/Republican}} |47R, 18D
| rowspan="8" {{Party shading/Tie}} |2D, 2R
|- style="height:2em"
!1952
| rowspan="8" {{Party shading/Republican}} |[[Dwight D. Eisenhower|Eisenhower]]/<br />[[Richard Nixon|Nixon]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1953
| rowspan="2" {{Party shading/Republican}} |[[Homer Bruce]] <small>(R)</small>
| rowspan="2" {{Party shading/Democratic}} |Homer Bedford <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |23R, 12D
| rowspan="2" {{Party shading/Republican}} |45R, 20D
|- style="height:2em"
!1954
|- style="height:2em"
!1955
| rowspan="2" {{Party shading/Democratic}} |[[Edwin C. Johnson]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Stephen McNichols]] <small>(D)</small>
| rowspan="8" {{Party shading/Democratic}} |George Baker <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |Earl E. Ewing <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |20R, 15D
| rowspan="2" {{Party shading/Republican}} |38R, 27D
| rowspan="19" {{Party shading/Republican}} |[[Gordon Allott]] <small>(R)</small>
|- style="height:2em"
!1956
|- style="height:2em"
!1957
| rowspan="6" {{Party shading/Democratic}} |[[Stephen McNichols]] <small>(D)</small>{{efn|Gubernatorial terms changed from two to four years during McNichols' term; his first term was two years, his second term was four years.}}
| rowspan="2" {{Party shading/Republican}} |[[Frank L. Hays]] <small>(R)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Homer Bedford]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |21D, 14R
| rowspan="2" {{Party shading/Democratic}} |38D, 27R
| rowspan="6" {{Party shading/Democratic}} |[[John A. Carroll]] <small>(D)</small>
|- style="height:2em"
!1958
|- style="height:2em"
!1959
| rowspan="8" {{Party shading/Democratic}} |[[Robert Lee Knous]] <small>(D)</small>
| rowspan="4" {{Party shading/Democratic}} |[[Tim Armstrong (Colorado politician)|Tim Armstrong]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |22D, 13R
| rowspan="2" {{Party shading/Democratic}} |44D, 21R
| rowspan="2" {{Party shading/Democratic}} |3D, 1R
|- style="height:2em"
!1960
| rowspan="4" {{Party shading/Republican}} |[[Richard Nixon|Nixon]]/<br />[[Henry Cabot Lodge Jr.|Lodge]] <small>(R)</small> {{nay}}
|- style="height:2em"
!1961
| rowspan="2" {{Party shading/Democratic}} |19D, 16R
| rowspan="2" {{Party shading/Democratic}} |33D, 32R
| rowspan="4" {{Party shading/Tie}} |2D, 2R
|- style="height:2em"
!1962
|- style="height:2em"
!1963
| rowspan="12" {{Party shading/Republican}} |[[John Arthur Love]] <small>(R)</small>{{efn|Resigned to become director of the Office of Energy Policy.}}
| rowspan="13" {{Party shading/Republican}} |[[Bryon A. Anderson]] <small>(R)</small>
| rowspan="4" {{Party shading/Democratic}} |[[Homer Bedford]] <small>(D)</small>
| rowspan="6" {{Party shading/Republican}} |20R, 15D
| rowspan="2" {{Party shading/Republican}} |41R, 24D
| rowspan="14" {{Party shading/Republican}} |[[Peter H. Dominick]] <small>(R)</small>
|- style="height:2em"
!1964
| rowspan="4" {{Party shading/Democratic}} |[[Lyndon B. Johnson|Johnson]]/<br />[[Hubert Humphrey|Humphrey]] <small>(D)</small> {{aye}}
|- style="height:2em"
!1965
| rowspan="2" {{Party shading/Democratic}} |42D, 23R
| rowspan="2" {{Party shading/Democratic}} |4D
|- style="height:2em"
!1966
|- style="height:2em"
!1967
| rowspan="5" {{Party shading/Democratic}} |[[Mark Anthony Hogan]] <small>(D)</small>
| rowspan="4" {{Party shading/Republican}} |[[Virginia Neal Blue]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |37R, 28D
| rowspan="5" {{Party shading/Democratic}} |3D, 1R
|- style="height:2em"
!1968
| rowspan="10" {{Party shading/Republican}} |[[Richard Nixon|Nixon]]/<br />[[Spiro Agnew|Agnew]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1969
| rowspan="3" {{Party shading/Republican}} |24R, 11D
| rowspan="5" {{Party shading/Republican}} |38R, 27D
|- style="height:2em"
! rowspan="2" |1970
|- style="height:2em"
| rowspan="1" {{Party shading/Republican}} |[[Julia Swearingen]] <small>(R)</small>
|- style="height:2em"
!1971
| rowspan="3" {{Party shading/Republican}} |[[John D. Vanderhoof]] <small>(R)</small>
| rowspan="5" {{Party shading/Republican}} |[[Palmer Burch]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |21R, 14D
| rowspan="2" {{Party shading/Tie}} |2D, 2R
|- style="height:2em"
!1972
|- style="height:2em"
! rowspan="2" |1973
| rowspan="3" {{Party shading/Republican}} |22R, 13D
| rowspan="3" {{Party shading/Republican}} |37R, 28D
| rowspan="7" {{Party shading/Democratic}} |[[Floyd Haskell]] <small>(D)</small>
| rowspan="3" {{Party shading/Republican}} |3R, 2D
|- style="height:2em"
| rowspan="2" {{Party shading/Republican}} |[[John D. Vanderhoof]] <small>(R)</small>{{efn|name=ltfilled}}
| rowspan="2" {{Party shading/Republican}} |[[Ted L. Strickland]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |[[John Carbone Porfilio|John P. Moore]] <small>(R)</small>
|- style="height:2em"
!1974
| rowspan="9" {{Party shading/Republican}} |[[Mary Estill Buchanan]] <small>(R)</small>
|- style="height:2em"
!1975
| rowspan="12" {{Party shading/Democratic}} |[[Richard Lamm]] <small>(D)</small>
| rowspan="4" {{Party shading/Democratic}} |[[George L. Brown (politician)|George L. Brown]] <small>(D)</small>
| rowspan="8" {{Party shading/Democratic}} |[[J.D. MacFarlane]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |[[Sam Brown (activist)|Sam Brown]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |19R, 16D
| rowspan="2" {{Party shading/Democratic}} |39D, 26R
| rowspan="12" {{Party shading/Democratic}} |[[Gary Hart]] <small>(D)</small>
| rowspan="8" {{Party shading/Democratic}} |3D, 2R
|- style="height:2em"
!1976
| rowspan="4" {{Party shading/Republican}} |[[Gerald Ford|Ford]]/<br />[[Bob Dole|Dole]] <small>(R)</small> {{nay}}
|- style="height:2em"
!1977
| rowspan="10" {{Party shading/Democratic}} |[[Roy Romer]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |18R, 17D
| rowspan="2" {{Party shading/Republican}} |35R, 30D
|- style="height:2em"
!1978
|- style="height:2em"
!1979
| rowspan="8" {{Party shading/Democratic}} |[[Nancy E. Dick]] <small>(D)</small>
| rowspan="6" {{Party shading/Republican}} |22R, 13D
| rowspan="2" {{Party shading/Republican}} |38R, 27D
| rowspan="12" {{Party shading/Republican}} |[[William L. Armstrong]] <small>(R)</small>
|- style="height:2em"
!1980
| rowspan="8" {{Party shading/Republican}} |[[Ronald Reagan|Reagan]]/<br />[[George H. W. Bush|Bush]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1981
| rowspan="2" {{Party shading/Republican}} |39R, 26D
|- style="height:2em"
!1982
|- style="height:2em"
!1983
| rowspan="12" {{Party shading/Republican}} |[[Natalie Meyer]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |[[Duane Woodard]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |40R, 25D
| rowspan="2" {{Party shading/Tie}} |3D, 3R
|- style="height:2em"
!1984
|- style="height:2em"
!1985
| rowspan="2" {{Party shading/Republican}} |24R, 11D
| rowspan="2" {{Party shading/Republican}} |48R, 17D
| rowspan="2" {{Party shading/Republican}} |4R, 2D
|- style="height:2em"
!1986
|- style="height:2em"
!1987
| rowspan="12" {{Party shading/Democratic}} |[[Roy Romer]] <small>(D)</small>
| rowspan="7" {{Party shading/Democratic}} |[[Mike Callihan]] <small>(D)</small>
| rowspan="4" {{Party shading/Democratic}} |[[Duane Woodard]] <small>(D)</small>{{efn|Entered office as a Republican but by 1990 had [[Party switching in the United States|switched parties]] and become a Democrat.}}
| rowspan="8" {{Party shading/Democratic}} |[[Gail Schoettler]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |25R, 10D
| rowspan="2" {{Party shading/Republican}} |41R, 24D
| rowspan="6" {{Party shading/Democratic}} |[[Tim Wirth]] <small>(D)</small>
| rowspan="6" {{Party shading/Tie}} |3R, 3D
|- style="height:2em"
!1988
| rowspan="4" {{Party shading/Republican}} |[[George H. W. Bush|Bush]]/<br />[[Dan Quayle|Quayle]] <small>(R)</small> {{aye}}
|- style="height:2em"
!1989
| rowspan="2" {{Party shading/Republican}} |24R, 11D
| rowspan="2" {{Party shading/Republican}} |40R, 25D
|- style="height:2em"
!1990
|- style="height:2em"
!1991
| rowspan="8" {{Party shading/Republican}} |[[Gale Norton]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |23R, 12D
| rowspan="2" {{Party shading/Republican}} |38R, 27D
| rowspan="6" {{Party shading/Republican}} |[[Hank Brown]] <small>(R)</small>
|- style="height:2em"
!1992
| rowspan="4" {{Party shading/Democratic}} |[[Bill Clinton|Clinton]]/<br />[[Al Gore|Gore]] <small>(D)</small> {{aye}}
|- style="height:2em"
!1993
| rowspan="4" {{Party shading/Republican}} |19R, 16D
| rowspan="2" {{Party shading/Republican}} |34R, 31D
| rowspan="2" {{Party shading/Democratic}} |[[Ben Nighthorse Campbell|Ben Nighthorse<br />Campbell]] <small>(D)</small>
| rowspan="11" {{Party shading/Republican}} |4R, 2D
|- style="height:2em"
!1994
| {{Party shading/Democratic}} |[[Samuel H. Cassidy]] <small>(D)</small>
|- style="height:2em"
!1995
| rowspan="4" {{Party shading/Democratic}} |Gail Schoettler <small>(D)</small>
| rowspan="5" {{Party shading/Republican}} |[[Victoria Buckley]] <small>(R)</small>{{efn|Died in office on July 17, 1999.}}
| rowspan="4" {{Party shading/Republican}} |[[Bill Owens (Colorado politician)|Bill Owens]] <small>(R)</small>
| rowspan="4" {{Party shading/Republican}} |41R, 24D
| rowspan="11" {{Party shading/Republican}} |[[Ben Nighthorse Campbell|Ben Nighthorse<br />Campbell]] <small>(R)</small>
|- style="height:2em"
!1996
| rowspan="5" {{Party shading/Republican}} |[[Bob Dole|Dole]]/<br />[[Jack Kemp|Kemp]] <small>(R)</small> {{nay}}
|- style="height:2em"
!1997
| rowspan="2" {{Party shading/Republican}} |20R, 15D
| rowspan="15" {{Party shading/Republican}} |[[Wayne Allard]] <small>(R)</small>
|- style="height:2em"
!1998
|- style="height:2em"
! rowspan="2" |1999
| rowspan="11" {{Party shading/Republican}} |[[Bill Owens (Colorado politician)|Bill Owens]] <small>(R)</small>
| rowspan="5" {{Party shading/Republican}} |[[Joe Rogers (politician)|Joe Rogers]] <small>(R)</small>
| rowspan="7" {{Party shading/Democratic}} |[[Ken Salazar]] <small>(D)</small>
| rowspan="8" {{Party shading/Republican}} |[[Mike Coffman]] <small>(R)</small>
| rowspan="3" {{Party shading/Republican}} |21R, 14D
| rowspan="3" {{Party shading/Republican}} |39R, 26D
|- style="height:2em"
| rowspan="7" {{Party shading/Republican}} |[[Donetta Davidson]] <small>(R)</small>{{efn|name=app-elec|Initially appointed to fill vacancy; later elected in his or hertheir own right.}}
|- style="height:2em"
!2000
| rowspan="10" {{Party shading/Republican}} |[[George W. Bush|Bush]]/<br />[[Dick Cheney|Cheney]] <small>(R)</small> {{aye}}
|- style="height:2em"
!2001
| rowspan="2" {{Party shading/Democratic}} |18D, 17R
| rowspan="2" {{Party shading/Republican}} |38R, 27D
|- style="height:2em"
!2002
|- style="height:2em"
!2003
| rowspan="6" {{Party shading/Republican}} |[[Jane E. Norton]] <small>(R)</small>
| rowspan="2" {{Party shading/Republican}} |18R, 17D
| rowspan="2" {{Party shading/Republican}} |37R, 28D
| rowspan="2" {{Party shading/Republican}} |5R, 2D
|- style="height:2em"
!2004
|- style="height:2em"
! rowspan="2" |2005
| rowspan="12" {{Party shading/Republican}} |[[John Suthers]] <small>(R)</small>
| rowspan="4" {{Party shading/Democratic}} |18D, 17R
| rowspan="4" {{Party shading/Democratic}} |35D, 30R
| rowspan="6" {{Party shading/Democratic}} |Ken Salazar <small>(D)</small>{{efn|Resigned following appointment as [[United States Secretary of the Interior]].}}
| rowspan="4" {{Party shading/Republican}} |4R, 3D
|- style="height:2em"
| rowspan="3" {{Party shading/Republican}} |[[Gigi Dennis]] <small>(R)</small>{{efn|name=app|Appointed to fill a vacancy.}}
| rowspan="2" {{Party shading/Republican}} |[[Mark Hillman]] <small>(R)</small>{{efn|name=app}}
|- style="height:2em"
! rowspan="2" |2006
|- style="height:2em"
| {{Party shading/Republican}} |[[Mike Coffman]] <small>(R)</small>{{efn|Resigned in 2005 in order to re-join the [[United States Marine Corps]], with whom he then served tour-of-duty in [[Iraq War|Iraq]]. Upon Coffman's resignation as treasurer, Governor Bill Owens appointed State Senator Mark Hillman to the office. Hillman served as treasurer until 2006, when Coffman returned from Iraq and was able to fulfill the duties of the office.}}
|- style="height:2em"
!2007
| rowspan="4" {{Party shading/Democratic}} |[[Bill Ritter]] <small>(D)</small>
| rowspan="4" {{Party shading/Democratic}} |[[Barbara O'Brien (politician)|Barbara O'Brien]] <small>(D)</small>
| rowspan="2" {{Party shading/Republican}} |[[Mike Coffman]] <small>(R)</small>{{efn|Elected in November 2008 to U.S. House representing [[Colorado's 6th congressional district]].}}
| rowspan="4" {{Party shading/Democratic}} |[[Cary Kennedy]] <small>(D)</small>
| rowspan="2" {{Party shading/Democratic}} |20D, 15R
| rowspan="2" {{Party shading/Democratic}} |39D, 26R
| rowspan="2" {{Party shading/Democratic}} |4D, 3R
|- style="height:2em"
!2008
| rowspan="8" {{Party shading/Democratic}} |[[Barack Obama|Obama]]/<br />[[Joe Biden|Biden]] <small>(D)</small> {{aye}}
|- style="height:2em"
!2009
| rowspan="2" {{Party shading/Democratic}} |[[Bernie Buescher]] <small>(D)</small>{{efn|name=app}}
| rowspan="2" {{Party shading/Democratic}} |21D, 14R
| rowspan="2" {{Party shading/Democratic}} |38D, 27R
| rowspan="6" {{Party shading/Democratic}} |[[Mark Udall]] <small>(D)</small>
| rowspan="14"17 {{Party shading/Democratic/active}} |[[Michael Bennet]] <small>(D)</small>{{efn|name=app-elec}}
| rowspan="2" {{Party shading/Democratic}} |5D, 2R
|- style="height:2em"
!2010
|- style="height:2em"
!2011
| rowspan="9" {{Party shading/Democratic}} |[[John Hickenlooper]] <small>(D)</small>
| rowspan="6" {{Party shading/Democratic}} |[[Joseph Garcia (American politician)|Joseph Garcia]] <small>(D)</small>
| rowspan="4" {{Party shading/Republican}} |[[Scott Gessler]] <small>(R)</small>
| rowspan="9" {{Party shading/Republican}} |[[Walker Stapleton]] <small>(R)</small>
| rowspan="3" {{Party shading/Democratic}} |20D, 15R
| rowspan="2" {{Party shading/Republican}} |33R, 32D
| rowspan="9" {{Party shading/Republican}} |4R, 3D
|- style="height:2em"
!2012
|- style="height:2em"
!2013
| rowspan="2" {{Party shading/Democratic}} |37D, 28R
|- style="height:2em"
!2014
Line 857 ⟶ 853:
|- style="height:2em"
!2015
| rowspan="5" {{party shading/Republican}} |[[Wayne W. Williams]] <small>(R)</small>
| rowspan="5" {{party shading/Republican}} |[[Cynthia Coffman (politician)|Cynthia Coffman]] <small>(R)</small>
| rowspan="5" {{party shading/Republican}} |18R, 17D
| rowspan="3" {{party shading/Democratic}} |34D, 31R
| rowspan="7" {{party shading/Republican}} | [[Cory Gardner]] <small>(R)</small>
|- style="height:2em"
! rowspan="2" |2016
| rowspan="5" {{Party shading/Democratic}} |[[Hillary Clinton|Clinton]]/<br />[[Tim Kaine|Kaine]] <small>(D)</small> {{nay}}
|- style="height:2em"
| rowspan="3" {{Party shading/Democratic}} |[[Donna Lynne]] <small>(D)</small>
|- style="height:2em"
!2017
| rowspan="2" {{party shading/Democratic}} |37D, 28R
|- style="height:2em"
!2018
|- style="height:2em"
!2019
| rowspan="3"6 {{Party shading/Democratic/active}} |[[Jared Polis]] <small>(D)</small>
| rowspan="3"6 {{party shading/Democratic/active}} |[[Dianne Primavera]] <small>(D)</small>
| rowspan="3"6 {{party shading/Democratic/active}} |[[Jena Griswold]] <small>(D)</small>
| rowspan="3"6 {{party shading/Democratic/active}} |[[Phil Weiser]] <small>(D)</small>
| rowspan="3"6 {{party shading/Democratic/active}} |[[Dave Young (Colorado politician)|Dave Young]] <small>(D)</small>
| rowspan="2" {{party shading/Democratic}} |19D, 16R
| rowspan="3"4 {{party shading/Democratic/active}} |41D, 24R
| rowspan="3"4 {{party shading/Democratic/active}} |4D, 3R
|- style="height:2em"
!2020
| rowspan="2"4 {{partyParty shading/Democratic/active}} |[[Joe Biden|Biden]]/<br />[[Kamala Harris|Harris]] <small>(D)</small> {{aye}}
|- style="height:2em"
!2021
| {{partyParty shading/Democratic/active}} rowspan-1 |20D, 15R
| rowspan=4 {{party shading/Democratic/active}} rowspan-1 |[[John Hickenlooper]] <small>(D)</small>
|- style="height:2em"
!2022
| {{Party shading/Democratic}} |21D, 14R{{efn|[[State senator|State Sen.]] [[Kevin Priola]] (D-[[Henderson, Colorado|Henderson]] [[Colorado's 25th Senate district|District 25]]) left the [[Colorado Republican Party|Republican Party]] to register as a [[Colorado Democratic Party|Democrat]] on August 22, 2022.<ref>{{Cite web |last=Frank |first=John |date=2022-08-22 |title=Colorado lawmaker exits GOP, switches to Democratic Party, citing Jan. 6 attack and Trump |url=https://www.axios.com/2022/08/22/colorado-lawmaker-leaves-gop-jan-6-attack-trump |access-date=2022-08-22 |website=Axios |language=en}}</ref>}}
|- style="height:2em"
!2023
! rowspan="2" |Year!![[Governor of Colorado|Governor]]!![[List of lieutenant governors of Colorado|Lieutenant<br />Governor]]!![[Secretary of State of Colorado|Secretary<br />of State]]!![[Colorado Attorney General|Attorney<br />General]]!!Treasurer!![[Colorado Senate|State Senate]]!![[Colorado House of Representatives|State House]]!![[List of United States senators from Colorado|U.S. Senator<br />(Class II)]]!![[List of United States senators from Colorado|U.S. Senator<br />(Class III)]]!![[List of United States representatives from Colorado|U.S. House]]!! rowspan="2" |[[United States presidential election|Electoral votes]]
| rowspan=2 {{Party shading/Democratic/active}} |23D, 12R
| rowspan=2 {{Party shading/Democratic/active}} |46D, 19R
| rowspan=2 {{Party shading/Democratic/active}} |5D, 3R
|- style="height:2em"
!2024
! colspan="5" |Executive offices!! colspan="2" |[[Colorado General Assembly|General Assembly]]!! colspan="3" |[[United States congressional delegations from Colorado|United States Congress]]
| {{TBD}}
|}
{{United States political party shading key}}
Line 916 ⟶ 919:
[[Category:Politics of Colorado]]
[[Category:Government of Colorado]]
[[Category:Political party strength by state in the United States by state|Colorado]]