California's 10th district: 2026 House race
California's 10th district is held by Mark DeSaulnier (Democratic). Mark DeSaulnier leads in reported fundraising with $567K. Forecasters rate it Safe D.
Candidates and money1 on file
| Candidate | Party | Status | Raised | Spent | Cash |
|---|---|---|---|---|---|
| Mark DeSaulnier | DEM | Incumbent | $567K | $610K | $586K |
Also on the November ballot, with no FEC campaign record on file: Jeff Frese (Republican).
Ballot status: nominees as listed on Wikipedia (text under CC BY-SA), matched to FEC records by name.
Reported Source: FEC, through each candidate's latest filing. Open this race on FEC.gov
Other FEC filers (not matched to a November nominee)4
| Candidate | Party | Status | Raised | Spent | Cash |
|---|---|---|---|---|---|
| Katherine Piccinini | REP | Challenger | $21K | $19K | $3,851 |
| Angela Griffiths | REP | Challenger | $12K | $8,594 | $3,217 |
| Mitchell David Maisler | DEM | Challenger | $10K | $11K | -$514 |
| Joshua Hamilton | DEM | Challenger | $7,486 | $6,406 | $1,080 |
They may have lost a primary or withdrawn, or our name match may have missed them. Their records are kept for reference.
Forecasts and ratingsnational odds + who rates this race
Consensus (median of 5): Safe D Estimate
| Forecaster | Rating | Date listed | Note |
|---|---|---|---|
| Cook Political Report | Safe D | 2025-11-05 | dated |
| Inside Elections | Safe D | 2025-03-07 | dated |
| Sabato's Crystal Ball | Safe D | 2025-07-15 | dated |
| Decision Desk HQ | Safe D | 2026-07-14 | dated |
| The Economist | Safe D | 2026-05-06 | dated |
Ratings are each publisher's own, compiled from Wikipedia (CC BY-SA 4.0). The date is the one listed there; a rater may have changed its call since, and “dated” means more than 45 days old. Open the forecaster for its current rating.
Prediction market
Democratic 96.4% · Republican 3.5% Estimate
Polymarket price read as a probability (the two prices need not add up to exactly 100%). Volume $27,077, snapshot 2026-10-15. Thin market: small trades can move the price. View the market · About Polymarket
Open each forecaster for its current rating and method.
National picture: Democrats 90.5% to control the House on Polymarket Estimate. See all forecasts.
Who lives hereCensus survey data
| Measure | Value |
|---|---|
| Population | 760,299 |
| Median age | 41.1 |
| Median household income | $153,525 ±$2,889 |
| Adults 25+ with a bachelor’s degree or more | 55.6% |
| White, not Hispanic | 46.0% |
| Black, not Hispanic | 5.0% |
| Asian, not Hispanic | 22.7% |
| Hispanic or Latino (any race) | 18.4% |
| Homes lived in by their owners | 71.7% |
| People below the poverty line | 6.3% |
| Born outside the U.S. | 24.7% |
Heads up: California drew a new congressional map for 2026. These figures describe the old district lines, so they will not match the people who vote in this race.
Source: U.S. Census Bureau, American Community Survey, 2020-2024 5-year estimates, district lines of the 119th Congress, fetched 2026-10-15. These are survey estimates with margins of error; the Bureau publishes the error for each figure.
Public attention in this race1 candidate with an article
| Candidate | Party | Views, 30 days | Share |
|---|---|---|---|
| Mark DeSaulnier | DEM | 2,408 | 100% |
Reported English Wikipedia page views, 2026-09-14 to 2026-10-13. Only candidates with an article are counted; views show curiosity, not support.
Data on this page4/6 complete
| Data | Status | Detail |
|---|---|---|
| Nominees | Have it | listed on Wikipedia, matched to FEC |
| Campaign finance | Have it | FEC filings through 06/30/2026 |
| Forecaster ratings | Have it | 5 forecasters |
| Prediction market | Partial | Polymarket, volume $27K |
| 2024 result | Missing | not available |
| Financial disclosures | Have it | 1 of 1 candidates read |
So you can see what we have and what we do not. Missing is never treated as zero.