PolitiFinder

2004 California U.S. House District 20 Election

California · 2 candidates · See every 2004 U.S. House race

Who won the 2004 California U.S. House District 20 Election?

Jim Costa won the 2004 California U.S. House District 20 Election. Jim Costa received 61,005 popular votes (53.4%). The main challenger was Roy Ashburn (46.6%).

See the full head-to-head between Costa and Ashburn

Costa +6.8 pts · won by 7,774 votes
Jim CostaDemocraticWINNER53.4%
61,005 votes
Roy AshburnRepublican46.6%
53,231 votes
Popular-vote totals for U.S. House elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.