1957 United States Senate special election in Wisconsin

1957 United States Senate special election in Wisconsin

August 27, 1957
 
Nominee William Proxmire Walter J. Kohler Jr.
Party Democratic Republican
Popular vote 435,985 312,931
Percentage 56.43% 40.50%

County results
Proxmire:      40–50%      50–60%      60–70%      70–80%
Kohler:      40–50%      50–60%

U.S. senator before election

Joseph McCarthy
Republican

Elected U.S. Senator

William Proxmire
Democratic

The 1957 United States Senate special election in Wisconsin took place on August 27, 1957, to elect a U.S. Senator to complete the unexpired term of Senator Joseph McCarthy, who died on May 2, 1957.

Wisconsin law did not allow for the appointment of an interim Senator until the special election could be held.

Democratic nominee William Proxmire defeated Republican nominee and former Governor Walter J. Kohler Jr.