About
John Thune is an American politician serving as the senior United States Senator from South Dakota since 2005. Prior to his Senate career, he served as the U.S. Representative for South Dakota's at-large congressional district from 1997 to 2003. As a Republican, Thune has held significant leadership positions in the Senate. Since January 2025, Thune has been the Senate majority leader and Senate Republican leader.
Career Timeline
Elected to House of Representatives
Elected as U.S. Representative for South Dakota. This was a key start to his political career.
Elected to the Senate
Successfully ran for U.S. Senate. Enhanced his political standing and influence.
Senate Republican Whip
Elected as Senate Republican Whip. Moved into a significant leadership position within the Senate.
Senate Republican Conference Chair
Elected as Senate Republican Conference Chair. Continued ascent in Senate leadership.
Senate Minority Whip
Became Senate Minority Whip. Maintained a strong leadership role within the Republican Party.
Senate Majority Leader
Ascends to Senate Majority Leader, his most powerful position to date, making him a top figure in the Republican party.
Continued Senate Leadership
Continues to serve in Senate leadership, wielding significant influence in national politics. His net worth grows moderately.
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Last updated: February 23, 2026