John Thune is a U.S. Senator from South Dakota and the Senate Majority Leader as of 2025. Born in 1961 and raised in Murdo, South Dakota, Thune's interest in politics began early, influenced by a chance meeting with then-Rep. Jim Abdnor. He earned an undergraduate degree from Biola University and an MBA from the University of South Dakota. Early in his career, he worked for Senator Abdnor and the Small Business Administration under President Ronald Reagan. Returning to South Dakota in 1989, he held leadership roles including executive director of the state Republican Party and director of the State Railroad Division. Thune was first elected to the U.S. House of Representatives in 1996, serving three terms and gaining recognition for securing funding for state projects and advocating for smaller government and tax cuts. After narrowly losing a 2002 Senate race, he won a U.S. Senate seat in 2004 by defeating then-Senate Democratic Leader Tom Daschle, marking a historic upset. He has been reelected multiple times, including an unopposed Senate race in 2010. Throughout his Senate career, Thune has served on key committees such as Agriculture, Commerce, and Finance, and has held significant leadership positions including Senate Republican Whip and Chairman of the Senate Republican Conference. Known as a conservative Republican, he has focused on energy, agriculture, tax reform, and social issues. Notably, he introduced legislation to limit EPA regulatory authority and to repeal the federal estate tax. In 2024, Thune was elected Senate Majority Leader, assuming the role in 2025. He resides in Sioux Falls with his wife Kimberley; they have two daughters and six grandchildren. Outside politics, he enjoys pheasant hunting, running, and spending time with family[1][2][4][5][6].