The 1861 United States Senate election in Wisconsin was held in the 14th Wisconsin Legislature on January 23, 1861. Incumbent Republican U.S. senator Charles Durkee did not run for re-election. Former Wisconsin circuit court judge Timothy O. Howe was elected United States senator on the first ballot.[1]
At the start of the 1861 term, Republicans held large majorities in both chambers of the Wisconsin Legislature, so had more than enough votes to elect a Republican United States senator. The main drama of the election was in the Republican legislative caucuses as they parsed through Republican candidates and selected the former judge, Timothy Howe, as their nominee. Howe had previously sought the party's nomination for U.S. Senate in the 1857 election, but lost out to James Rood Doolittle.