Rounds, Mike, 1954-

Marion Michael Rounds (born October 24, 1954) is an American businessman and politician serving as the junior United States senator from South Dakota since 2015. A member of the Republican Party, he served as the 31st governor of South Dakota from 2003 to 2011, and in the South Dakota Senate from 1991 to 2001. In 2014, Rounds was elected to the United States Senate, succeeding retiring Democrat Tim Johnson. He was reelected in 2020 over Democratic nominee Dan Ahlers.

The eldest of 11 children, Rounds was born in Huron, South Dakota, the son of Joyce (née Reinartz) and Don Rounds. He has German, Belgian, Swedish and English ancestry. Rounds has lived in the state capital of Pierre since he was three years old. He was named for an uncle, Marion Rounds, who was killed in the Pacific theater during World War II. Several members of the Rounds family have been involved in state government. His father worked at various times as state director of highway safety, a staffer for Rural Electrification Administration, and executive director of the South Dakota Petroleum Council.[3] His brother Tim Rounds is a member of the South Dakota Legislature, representing District 24, which includes Pierre.

Rounds attended South Dakota State University in Brookings, where he earned his Bachelor of Science in political science.

Rounds is a former partner in Fischer Rounds & Associates, an insurance and real estate firm with offices in Pierre, Rapid City, Mitchell, Watertown and Sioux Falls.