The South Dakota Republican Party is the affiliate of the Republican Party in South Dakota. It is currently the dominant party in the state, controlling South Dakota's at-large U.S. House seat, both U.S. Senate seats, the governorship, and has supermajorities in both houses of the state legislature. State Sen. John Wiik has served as the party's chairman since 2023.

Current elected officials

The South Dakota Republican Party controls all ten statewide offices and holds majorities in the South Dakota Senate and the South Dakota House of Representatives. Republicans also hold both of the state's U.S. Senate seats and the state's at-large congressional seat.

Federal

U.S. Senate

U.S. House of Representatives

State

Electoral history

Gubernatorial