1948 United States Senate election in Iowa

The 1948 United States Senate election in Iowa took place on November 2, 1948. Incumbent Republican Senator George A. Wilson ran for re-election to a second term but was defeated by Democratic former Senator Guy Gillette.

Candidates

 * John N. Calhoun, former State Senator from Keosauqua (1933–35) and National Guard Lieutenant Colonel in World War II
 * George A. Wilson, incumbent Senator since 1943

Candidates

 * Guy Gillette, former U.S. Senator (1936–45)
 * Ernest J. Seemann, perennial candidate