PolitiFinder

2006 California U.S. Senate Election

California · 6 candidates · See every 2006 U.S. Senate race

Who won the 2006 California U.S. Senate Election?

Dianne Feinstein won the 2006 California U.S. Senate Election. Dianne Feinstein received 5,076,289 popular votes (59.43%). The main challenger was Richard Dick Mountjoy (35.02%).

See the full head-to-head between Feinstein and Mountjoy

Feinstein +24.4 pts · won by 2,085,467 votes
Dianne FeinsteinDemocraticWINNER59.43%
5,076,289 votes
Richard Dick MountjoyRepublican35.02%
2,990,822 votes
Todd ChretienGreen1.72%
147,074 votes
Michael S. MettiLibertarian1.57%
133,851 votes
Marsha FeinlandPeace And Freedom1.38%
117,764 votes
Don J. GrundmannIndependent0.88%
75,350 votes
Popular-vote totals for U.S. Senate elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.