PolitiFinder

1990 California U.S. House District 20 Election

California · 3 candidates · See every 1990 U.S. House race

Who won the 1990 California U.S. House District 20 Election?

William M. Thomas won the 1990 California U.S. House District 20 Election. William M. Thomas received 112,962 popular votes (59.79%). The main challenger was Michael A. Thomas (34.46%).

See the full head-to-head between Thomas and Thomas

Thomas +25.3 pts · won by 47,861 votes
William M. ThomasRepublicanWINNER59.79%
112,962 votes
Michael A. ThomasDemocratic34.46%
65,101 votes
William H. DilbeckLibertarian5.59%
10,555 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.