Elected Officials › US Senate

  • John Thune

    US Senator

    Visit Official Website

    (605) 334-9596

    Mailing Address:
    5015 South Bur Oak Place

    Sioux Falls, SD 57108

    John Thune is a native of Murdo, South Dakota.  John’s interest in public service began after being introduced to a well-known sports enthusiast and U.S. Representative, Jim Abdnor, at a (freshman) high school basketball game.  John had made five of six free throws, and afterwards Congressman Abdnor said, “I noticed you missed one.”

    Senator Thune graduated from Biola University before receiving his Masters of Business Administration from the University of South Dakota.  After completing his MBA in 1984, John married Kimberley Weems of Doland, South Dakota.

    John began his career in public service working in Washington, D.C., first for then-U.S. Senator Jim Abdnor and later at the U.S. Small Business Administration under an appointment from President Ronald Reagan.

    John and his family returned to South Dakota in 1989 where he continued his career in public service in various roles, including Executive Director of the South Dakota Republican Party, State Railroad Director (appointed by Gov. George S. Mickelson), and Executive Director of the South Dakota Municipal League.

    In 1996 John won his first term as South Dakota’s lone member of the U.S. House of Representatives.  John was then reelected in 1998 with the largest margin of victory in South Dakota history.  John returned for his third and final term in the House in 2001, keeping his pledge to serve only three terms.

    In 2002 John ran for U.S. Senate against incumbent Senator Tim Johnson and lost by the narrowest of margins, only 524 votes.  In 2004 John ran again and made history by defeating then-Senate Minority Leader Tom Daschle.  It was the first time in 52 years that a sitting Senate Leader was defeated.  In 2010, John again made history by winning a second term in the U.S. Senate in an unopposed race.  It was the first time in South Dakota’s history that any candidate ran unopposed for the U.S. Senate.

    Senator Thune serves on the Agriculture, Nutrition & Forestry Committee, the Commerce, Science & Transportation Committee, and the Finance Committee.  He has previously served as Chief Deputy Whip, Vice-Chairman of the Republican Conference and Chairman of the Republican Policy Committee. He currently serves as Republican Conference Chairman, the third-ranking leadership position among Senate Republicans.

    John and his wife Kimberley live in Sioux Falls, South Dakota and have two daughters; Brittany and Larissa.  In his free time, John enjoys spending time with his family, pheasant hunting, running and playing basketball.



  • Mike Rounds

    US Senator

    (605) 224-1450

    Office Address:
    111 Capitol Avenue, Suite 210
    Pierre, SD 57501

    Mailing Address:
    PO Box 309, Pierre, SD 57501

    On January 6th, 2015, Senator Marion Michael “Mike” Rounds was sworn into the United States Senate. Senator Rounds serves on four committees: Senate Armed Services; Banking, Housing and Urban Affairs; Veterans’ Affairs and Environment and Public Works.
    Rounds previously served as the 31st governor of South Dakota from 2003 – 2010, easily winning reelection in 2006. From 1991 to 2000, he was elected five times to the South Dakota State Senate. In 1995, his colleagues selected him to serve as Senate Majority Leader, a position that he held for six years. During his time in state government, Rounds was committed to growing the economy, keeping taxes low, and strengthening South Dakota families.
    A lifelong South Dakotan, Senator Rounds was born in Huron, the eldest of 11 siblings. He earned a bachelor’s degree in political science from South Dakota State University. In the private sector, Rounds built a successful insurance and real estate business with offices throughout the state. He and his wife, Jean, currently reside in Fort Pierre. They are the proud parents of four grown children and six grandchildren.