Primary
Democratic Primary
Held June 2, 2026.
| Candidate | Votes | % | |
|---|---|---|---|
| Marni von Wilpert ✓ | 39,327 | 20.8% | |
| Ammar Campa-Najjar | 20,095 | 10.6% | |
| Brandon Riker | 11,892 | 6.3% | |
| Abel Chavez | 10,339 | 5.5% | |
| Corinna Contreras | 10,056 | 5.3% | |
| Mike Schaefer | 4,770 | 2.5% | |
| Stephen Clemons | 1,542 | 0.8% | |
| Ferguson Porter | 1,301 | 0.7% | |
| Eric Shaw | 1,299 | 0.7% |
Republican Primary
Held June 2, 2026.
| Candidate | Votes | % | |
|---|---|---|---|
| Jim Desmond ✓ | 73,508 | 38.9% | |
| Kevin Patrick O'Neil | 13,132 | 7.0% |
No party preference Primary
Held June 2, 2026.
| Candidate | Votes | % | |
|---|---|---|---|
| Luis F. Reyna | 1,690 | 0.9% |
Full calendar and every race: California primary guide
Race Overview
General Election Polling Trend
PollingSource average — trailing average of all polls from the last 30 days.
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Candidates
Jim Desmond Nominee
RepublicanGeneral Election Polling Average
Average reflects all polls from the last 30 days; table shows the most recent 30 days or the newest 3 polls, whichever is more. How accurate is each pollster? →
| Pollster | Date | Sample | MoE | Dem | Rep |
|---|---|---|---|---|---|
| SurveyUSA | 2026-09-01 | 522 LV | ±5.20 | Marni von Wilpert 45.00% | Jim Desmond 42.00% |
| Lake Research Partners (D) partisan·D | 2026-07-14 | 500 LV | ±4.40 | Marni von Wilpert 48.00% | Jim Desmond 46.00% |
Questions About This Race
Who is winning the 2026 CA-48 House race?
Marni von Wilpert leads Jim Desmond 45% to 42% in the PollingSource polling average — a D+3.0 margin based on 1 poll from the last 30 days.
Is the 2026 CA-48 House race competitive?
Yes — the expert consensus rates it Lean D: Democrats are favored, but the race is competitive.
What does the latest poll of the 2026 CA-48 House race say?
The most recent public poll, from SurveyUSA (completed September 1, 2026), found Marni von Wilpert (D) at 45% and Jim Desmond (R) at 42%.
When is the 2026 CA-48 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 30 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.
Independent Expenditures Updated 6 hours ago
Top Spenders
- DMFI PAC GOP-aligned $2,000,000
- VETERANS FOR TRUTH PAC GOP-aligned $806,361
- VOTEVETS Dem-aligned $443,774
- HEALTH CARE SAVES LIVES GOP-aligned $376,539
- 48TH ACCOUNTABILITY PROJECT Dem-aligned $343,380
- SERVING CA Dem-aligned $284,259
- UPSET THE SETUP Dem-aligned $198,346
- CRUSH MAGA PAC GOP-aligned $160,675
- MAJORITY PAC GOP-aligned $62,854
- BLUE MAJORITY PROJECT Dem-aligned $34,960
Full outside-spending research — every committee, every race →
Race News
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