2018Final results
2018 election for California's 8th District
U.S. House · California
Paul Cook (R) won with 60.0% of the vote, defeating Tim Donnelly (R) by 19.9 points.
Paul CookRepublican · winner
60.0%102,415
Tim DonnellyRepublican
40.0%68,370
170,785 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.
No DemocratPaul Cook
—
Raised by the campaign
$978.5K
—
Spent by the campaign
$1.4M
—
Cash on hand
$140.3K
Other candidates' campaigns: Tim Donnelly $276.4K.
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018