1990Flipped from DemocraticFinal results
1990 election for California's 1st District
U.S. House · California
Frank Riggs (R) won with 43.3% of the vote, defeating Douglas Bosco (D) by 1.4 points, a seat Democrats won last time.
Frank RiggsRepublican · winner
43.3%99,782
Douglas BoscoDemocrat
41.9%96,468
Darlene G. ComingorePeace and Freedom
14.8%34,011
230,261 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.
Douglas BoscoFrank Riggs
$409.4K
Raised by the campaign
$253.5K
$413.7K
Spent by the campaign
$254.1K
$832
Cash on hand
-$585
Other candidates' campaigns: Darlene G. Comingore $9.4K.
Campaign money: FEC, through Dec 31, 1990.
Source: FEC campaign filingsUpdated Dec 31, 1990