The 1942 United States Senate election in Minnesota took place on November 3, 1942. Incumbent Republican
Joseph H. Ball, who had been temporarily appointed by
GovernorHarold Stassen in 1940 to fill the seat of the deceased Farmer–Labor
U.S. SenatorErnest Lundeen, defeated Farmer–Labor former U.S. Senator and former Governor
Elmer Benson, independent candidate
Martin A. Nelson, and Democratic nominee Ed Murphy, to win election to the full six-year term beginning in January 1943. A
special election held on the same date elected Republican nominee
Arthur E. Nelson to serve the remainder of Lundeen's unexpired term.
Following his 1940 appointment and subsequent election, Ball ultimately served the longest tenure of any Senator only elected once.