The 2008 United States Senate election in Minnesota took place on November 4, 2008. After a legal battle lasting over eight months, the Democratic–Farmer–Labor Party (DFL) candidate, Al Franken, defeated Republican incumbent Norm Coleman in one of the closest elections in the history of the Senate, with Coleman's Senate predecessor Dean Barkley taking third place. Franken took his oath of office on July 7, 2009, more than half a year after the end of Coleman's term on January 3, 2009.

Dean Malcolm Barkley is an American attorney and politician who briefly served as a United States Senator from Minnesota from 2002 to 2003 as a member of the Independence Party of Minnesota. The founder and chair of the Minnesota Reform Party, he was the chairman of Jesse Ventura's successful upset bid for governor of Minnesota in 1998. Ventura subsequently appointed him director of the state's Office of Strategic and Long Range Planning. After Senator Paul Wellstone died in a plane crash just weeks before the 2002 election, Ventura appointed Barkley to fill Wellstone's Senate seat. His brief tenure ended when Republican Norm Coleman was elected and sworn in to fill the seat.