The 2014 United States Senate election in South Dakota took place on November 4, 2014, to elect a member of the United States Senate to represent the state of South Dakota, concurrently with the election of the Governor of South Dakota, as well as other elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections. Incumbent Democratic Senator Tim Johnson decided to retire instead of running for re-election to a fourth term in office.