2018Flipped from RepublicanFinal results
2018 election for California's 25th District
U.S. House · California
Katie Hill (D) won with 54.4% of the vote, defeating Stephen Knight (R) by 8.7 points, a seat Republicans won last time.
Katie HillDemocrat · winner
54.4%133,209
Stephen KnightRepublican
45.6%111,813
245,022 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.
Katie HillStephen Knight
$8.6M
Raised by the campaign
$2.6M
$8.5M
Spent by the campaign
$2.6M
$64.6K
Cash on hand
$33.5K
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018