2018Final results
2018 election for California's 1st District
U.S. House · California
Doug LaMalfa (R) won with 54.9% of the vote, defeating Audrey Denney (D) by 9.8 points.
Doug LaMalfaRepublican · winner
54.9%160,046
Audrey DenneyDemocrat
45.1%131,548
291,594 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Audrey DenneyDoug LaMalfa
$1.1M
Raised by the campaign
$1M
$1.1M
Spent by the campaign
$1.1M
$492
Cash on hand
$28.1K
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018