2010 United States Senate election in Wisconsin

Common card · No. 219107

The 2010 United States Senate election in Wisconsin was held on November 2, 2010. Incumbent Democratic Senator Russ Feingold lost re-election to a fourth term to Republican challenger Ron Johnson, a businessman and first-time candidate. Johnson was the first Republican to win a Senate election in Wisconsin since 1986. Feingold also became the fifth senator in a row from Wisconsin's Class 3 Senate seat to be defeated for re-election in the general election, and the seventh in a row overall to lose by a defeat in either the primary or general elections. Johnson was re-elected in 2016 in a rematch with Feingold. As of 2026, this was one of five elections in the past eight midterm cycles, since 1990, to involve the incumbent president's party losing a Senate seat in a state that leaned more than 10 points towards them in the preceding presidential election. The other races were the 2006 United States Senate election in Montana, the 2010 United States Senate election in Illinois, and the 2010...

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