The 1867 United States Senate election in Wisconsin was held in the 20th Wisconsin Legislature on January 23, 1867. Incumbent Republican U.S. senator Timothy O. Howe was re-elected on the first ballot.[1]
At the start of the 1867 term, Republicans held large majorities in both chambers of the Wisconsin Legislature, bolstered by the National Union Party coalition, and were easily able to re-elect their incumbent U.S. senator. His re-election was considered a foregone conclusion in newspapers, and there doesn't appear to have been any other candidates for the Republican nomination.