1990Final results
1990 election for California's 10th District
U.S. House · California
Don Edwards (D) won with 62.7% of the vote, defeating Mark Patrosso (R) by 25.4 points.
Don EdwardsDemocrat · winner
62.7%81,875
Mark PatrossoRepublican
37.3%48,747
130,637 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 1990
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Don EdwardsMark Patrosso
$225K
Raised by the campaign
$2.7K
$209.2K
Spent by the campaign
$2.6K
$55.5K
Cash on hand
$91
Campaign money: FEC, through Dec 31, 1990; FEC, through Sep 30, 1990.
Source: FEC campaign filingsUpdated Dec 31, 1990