Incumbent: Mike Rounds · Republican
Mike Rounds (Republican Party) is a member of the U.S. Senate from South Dakota. He assumed office on January 3, 2015. His current term ends on January 3, 2027. Rounds (Republican Party) is running for re-election to the U.S. Senate to represent South Dakota. He is on the ballot in the Republican primary on June 2, 2026.
Brian Bengs (independent) is running for election to the U.S. Senate to represent South Dakota. He declared candidacy for the general election scheduled on November 3, 2026.
Julian Beaudion (Democratic Party) is running for election to the U.S. Senate to represent South Dakota. The Democratic primary for this office on June 2, 2026, was canceled.
Justin McNeal (Republican Party) is running for election to the U.S. Senate to represent South Dakota. He is on the ballot in the Republican primary on June 2, 2026.
