 | |||||||||||||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
 County results La Follete Jr.: 30–40% 40–50% 50–60% 60–70% Callahan: 30–40% 40–50% Chapple: 30–40% 40–50% | |||||||||||||||||||||
| |||||||||||||||||||||
| Elections in Wisconsin |
|---|
 |
The 1934 United States Senate election in Wisconsin was held on November 6, 1934.
Incumbent Republican U.S. Senator Robert La Follette Jr. left his party and, with his brother Philip, formed the new Wisconsin Progressive Party. La Follette was re-elected on the Progressive ticket over Democrat John M. Callahan and Republican John B. Chapple. Robert La Follette Jr. was the first non-Republican to have won an election for this seat to the United States Senate from Wisconsin since John Lendrum Mitchell in 1893.