Primary
Primary held June 2, 2026.
Democratic Primary
| Candidate | Votes | % | |
|---|---|---|---|
| Mike Thompson ✓ | 84,753 | 41.0% | |
| Eric Jones ✓ | 45,992 | 22.2% |
No party preference Primary
| Candidate | Votes | % | |
|---|---|---|---|
| Thomas Roach | 1,527 | 0.7% |
Republican Primary
| Candidate | Votes | % | |
|---|---|---|---|
| Ray Riehle | 42,883 | 20.7% | |
| Sharon Brown | 9,818 | 4.8% | |
| John Mackenzie | 9,691 | 4.7% | |
| Chuck Uribe | 7,235 | 3.5% | |
| Jimih Jones | 3,001 | 1.4% | |
| Mandy Ghusar | 1,987 | 1.0% |
Full calendar and every race: California primary guide
Race Overview
Incumbent
Mike Thompson
Party
Democrat
Current Rating
Open Seat
No
Cook PVI
D+18
Candidates
Mike Thompson Nominee Incumbent
DemocratAverage reflects all polls from the last 90 days; table shows the most recent 30 days or the newest 3 polls, whichever is more. How accurate is each pollster? →
No polls in the last 90 days.
Questions About This Race
Is the 2026 CA-04 House race competitive?
No — the expert consensus rates it Safe D for Democrats.
When is the 2026 CA-04 House race decided?
Election Day is Tuesday, November 3, 2026.
How is the PollingSource average calculated?
The PollingSource average is the unweighted mean of every scientific public poll of the race from the last 90 days — we do not exclude pollsters. Each race page lists the individual polls behind the average with pollster, field dates, sample size, and margin of error. Full details: pollingsource.com/methodology.
Race News
No news coverage yet for this race.