John Thune is a Republican politician serving as the senior United States Senator from South Dakota, a position he has held since 2005. Prior to his Senate career, he served as a U.S. Representative for South Dakota's at-large congressional district from 1997 to 2003. Known for his conservative stance on fiscal and social issues, Thune has focused on agriculture, transportation, and telecommunications policy during his time in Congress. He has also held various leadership positions within the Senate Republican caucus, including Senate Minority Whip and Senate Majority Whip.
