2004 United States Senate election in Wisconsin

2004 United States Senate election in Wisconsin
	Feingold: 40–50% 50–60% 60–70% 70–80% 80–90% >90%; Michels: 40–50% 50–60% 60–70% 70–80% 80–90% >90%; Tie: ; No data:
U.S. senator before election; Russ Feingold; Democratic	Elected U.S. Senator ; Russ Feingold; Democratic

The 2004 United States Senate election in Wisconsin was held on November 2, 2004. Incumbent Senator Russ Feingold won re-election to a third term. As of 2024^[update], this is the last time Democrats won the Class 3 Senate seat from Wisconsin. Russ Feingold defeated Tim Michels in a landslide despite John Kerry narrowly winning Wisconsin over Republican presidential nominee George Walker Bush in the concurrent presidential election.