Incumbent Democratic Senator [[John Frost Nugent]] defeated Republican nominee [[Frank Robert Gooding]] by a very narrow margin of 1.000% and by 970 votes. Upon his election, [[John Frost Nugent]] became the first Democrat ever to have been elected to the United States Senate in Idaho or from Idaho and the first non-Republican to win a United States Senate seat in Idaho or from Idaho since [[1900 and 1901 United States Senate elections#Idaho|1901]] and the first non-Republican to win the Class 3 Senate seat in Idaho or from Idaho since [[1896 and 1897 United States Senate elections#Idaho|1897]].
