The 1873 United States Senate election in Wisconsin was held in the 26th Wisconsin Legislature on January 22, 1873. Incumbent Republican U.S. senator Timothy O. Howe was re-elected on the first ballot, becoming the first three-term U.S. senator from Wisconsin.[1]
At the start of the 1873 term, Republicans held majorities in both chambers of the Wisconsin Legislature, 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.[2]