1974 United States Senate election in South Dakota

The 1974 United States Senate election in South Dakota was held on November 5, 1974. Incumbent Democratic U.S. Senator George McGovern, who had lost the 1972 United States presidential election to Richard Nixon ran for reelection to a third term and won, despite having also lost his home state two years prior.

Primary elections
Primary elections were held on June 4, 1974.

Candidates

 * George McGovern, incumbent U.S. Senator

Candidates

 * Barbara B. Gunderson, former Republican National Committeewoman, former Civil Service Commissioner
 * Al Schock
 * Leo K. Thorsness, former United States Air Force colonel and prisoner of war

Candidates

 * Leo K. Thorsness (R)
 * George McGovern (D), incumbent U.S. Senator