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.

[3] The South Dakota Republican Party controls all ten statewide offices and holds supermajorities in the South Dakota Senate and the South Dakota House of Representatives.

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