Democratic
Marni von Wilpert
Major-party general-election nominee.
← all House races
California District 48 election, 2026
Marni von Wilpert vs. Jim Desmond on a newly enacted 2026 district map. Today's article: every forecast for this race →
VotePredictor forecast
Marni von Wilpert favored
Likely D · predicted margin D+8.0
93%
chance to win
2024 presidential margin
D+3.52026 national environment
D+8.0District polls
2, averaging D+5.5Forecast spread
±5.3 pointsMargin from the district's presidential lean on its 2026 lines, one fitted intercept and the national environment as a uniform swing; the win probability adds a decaying incumbency premium (open seat: none). The 2 district polls are blended in by inverse variance, about 54% of the weight: the model alone said D+11.0.
Republican
Jim Desmond
Major-party general-election nominee.
Polls
The polls behind it
2 polls · newest firstEach pollster name links to the poll's source; the grade under it is its VotePredictor grade from past elections. Margin is the poll as published. The ± under the sample size is the 95% margin of error on each candidate's share, from the sample size (the gap between them is about twice as uncertain).
PollsterDateSampleMargin
These polls move the forecast: their average is blended into the model's own margin by inverse variance, with about 54% of the weight on the polls (a single poll gets about half; more polls, more weight). The rule was preregistered and validated on 321 polled districts from 2018–2024. See methodology.
Campaign money
FEC reports through October 14, 2026Marni von WilpertDEM$5.0M raised
Spent $4.3MCash on hand $659kDebts $20k15% from donors under $200Self-funded $2k
Top contributors, industries and states
Contributors
Industries
- Not Reported$639k
- Self-Employed & Freelance$143k
- Legal & Professional Services$71k
- Finance, Insurance & Real Estate$18k
- Education & Academia$14k
States
- CA$936k
- NY$94k
- MA$64k
- DC$48k
- TX$34k
Jim DesmondREP$3.2M raised
Spent $2.5MCash on hand $718kDebts $3k11% from donors under $200Self-funded $532
Top contributors, industries and states
Contributors
- DESMOND VICTORY FUND$254k
- GROW THE MAJORITY$124k
- GROW THE MAJORITY$22k
- BRANDT, ERIC$14k
- DANSE, ILENE$14k
Industries
- Retired$765k
- Finance, Insurance & Real Estate$86k
- Not Reported$84k
- Retail, Food & Consumer Goods$31k
- Legal & Professional Services$29k
States
- CA$1.9M
- TX$51k
- FL$29k
- VA$16k
- AZ$16k
What each candidate's own campaign committees reported for the 2025–26 cycle; outside spending by PACs and parties is not included. Industries are classified from donors' reported employers. The House forecast's win probability reads the two nominees' shares of individual contributions shown here, a small term that never moves the predicted margin. Data: GovMoneyGraph, based on FEC records.
Other forecasts
We have not yet ingested a district rating from these independent forecasters for CA-48; links go to their current national House ratings. Missing is shown as missing—not converted into a probability.
Past results
Every election in California's 48th district we hold a result for. District numbers are reused across redistricting, so older rows may cover different ground than the seat does today.
YearWinnerMargin
Candidate news
No recent verified candidate stories are available in the site's news feed for this race yet.
Candidate field source: 2026 House election roster ↗