2024Final results
2024 election for California's 48th District
U.S. House · California
Darrell Issa (R) won with 59.3% of the vote, defeating Stephen Houlahan (D) by 18.6 points.
Darrell IssaRepublican · winner
59.3%213,334
Stephen HoulahanDemocrat
40.7%146,549
359,883 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
The seat over time
D − R margin in this seat's races around 2024
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Stephen HoulahanDarrell Issa
$30K
Raised by the campaign
$1.8M
$33.3K
Spent by the campaign
$755.4K
$7.9K
Cash on hand
$1.6M
Campaign money: FEC, through Dec 31, 2024.
Source: FEC campaign filingsUpdated Dec 31, 2024