The 1940 United States Senate election in Wisconsin was held on November 5, 1940. Incumbent Progressive U.S. Senator Robert La Follette Jr. was elected to a third term in office over Republican Fred H. Clausen and Democrat James E. Finnegan.
The 1940 United States Senate election in Wisconsin was held on November 5, 1940. Incumbent Progressive U.S. Senator Robert La Follette Jr. was elected to a third term in office over Republican Fred H. Clausen and Democrat James E. Finnegan. (en)