Mark DeSaulnier
DIncumbentFEC H0CA10073
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Raised this cycle$722K
Cash on hand: $467K
2026 race
CA-10 — U.S. House
2 candidates on the November ballot. Incumbent: Mark DeSaulnier.
Read the record. Not the rhetoric.
See where these candidates stand — and who's funding them.
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How we got here · 1 earlier contest
Primary · Tuesday, June 2, 2026
Called by audit: web-verified
Top-two primary — Mark DeSaulnier and Jeff Frese advanced to the general election.
- DMark DeSaulnier· inc.Advanced to general49.3%
- RJeff FreseAdvanced to general14.8%
- RKatherine PiccininiDefeated11.0%
- DJoshua HamiltonDefeated
- DMitchell David MaislerDefeated
- RAngela GriffithsDefeated
Election held
Counting
Tuesday, November 3, 2026
Results appear here once a race is called and verified. Official returns from the California Secretary of State.
Make sure you can vote
Disclosed money in race
$772K
Candidate + outside spending. See finance breakdown below.
Incumbent
Currently in office
Challengers
Sorted by fundraising
Katherine Piccinini
RChallengerFEC H4CA10109
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Raised this cycle$21K
Cash on hand: $4K
Angela Griffiths
RChallengerFEC H6CA10195
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Raised this cycle$12K
Cash on hand: $3K
Mitchell David Maisler
DChallengerFEC H6CA10179
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Raised this cycle$10K
Cash on hand: −$514
Joshua Hamilton
DChallengerFEC H6CA10161
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Raised this cycle$7K
Cash on hand: $565
Jeff Frese
RChallengerFEC H6CA10187
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Raised this cycle$0
Cash on hand: $0
Local signal
Early read on CA-10 — U.S. House
A directional read on where this seat is trending, from the signals we have so far. This is an early scaffold — more inputs light up as coverage and constituent activity accrue.
Coverage tone · leans negative
Recent news coverage of Mark DeSaulnier over the last 90 days.
0 positive5 neutral1 negative
6 articles · AI-assessed sentiment toward the rep. A media signal, not a poll of the district.
Constituent stakes
No one here has staked a position on a tracked vote yet. As neighbors weigh in on /pressure campaigns, the district's lean will show up here.
Money in the race
Finance breakdown
Disclosed funding shaping this race — both the money candidates raise themselves and the outside spending dropped by independent groups. Issue-ad spending by 501(c)(4) groups is excluded; the FEC doesn't require disclosure of it. See the note below for details.
Candidate fundraising: FEC reports through October 14, 2026 · 2025–26 cycle
Total disclosed
$772K
Candidate fundraising + independent expenditures (FEC).
Candidate-direct (Schedule A)
$772K
Raised by candidate committees themselves.
Outside spending (Schedule E)
$10
$10 for · $0 against
| Candidate | Raised directly | Outside for | Outside against | Net in corner |
|---|---|---|---|---|
Mark DeSaulnier(D)incumbent + SIERRA CLUB INDEPENDENT ACTION $10 | $722K | $10 | — | $722K |
Katherine Piccinini(R) | $21K | — | — | $21K |
Angela Griffiths(R) | $12K | — | — | $12K |
Mitchell David Maisler(D) | $10K | — | — | $10K |
Joshua Hamilton(D) | $7K | — | — | $7K |
Jeff Frese(R) | $0 | — | — | $0 |
Where the money comes from
In-state vs out-of-state
Share of each candidate's itemized individual contributions from donors inside CA versus the rest of the country. Excludes sub-$200 unitemized donations (no geography on file) and PAC money — see note below.
Mark DeSaulnier(D)88% in-state · $220K itemized
$193K in-state$27K out-of-state
Katherine Piccinini(R)100% in-state · $12K itemized
$12K in-state$0 out-of-state
Angela Griffiths(R)91% in-state · $8K itemized
$8K in-state$782 out-of-state
Mitchell David Maisler(D)100% in-state · $2K itemized
$2K in-state$0 out-of-state
Joshua Hamilton(D)78% in-state · $7K itemized
$6K in-state$2K out-of-state
What's counted, what isn't
Candidate-direct is each campaign's reported receipts on FEC Schedule A — individual contributions plus PAC contributions to the candidate's own committee — through the most recent filing.
Outside spending is independent expenditures on FEC Schedule E: money spent by PACs, super PACs, and party committees for or against a candidate, without legal coordination with the campaign. The committees listed under each candidate are the largest disclosed spenders on either side.
In-state vs out-of-state covers only itemized individual contributions — donations over $200, which are the only ones that carry a contributor address at the FEC. Sub-$200 unitemized donations (often a large share for grassroots campaigns) have no geography on file and are excluded, as is PAC money. So the percentages describe where a candidate's itemized individual money comes from, not where every dollar raised comes from.
Not counted: 501(c)(4) "social welfare" organizations run issue ads that frequently mention candidates by name but aren't classified as express advocacy under FEC rules — they file no Schedule E and don't appear in this breakdown. Press reporting on a race may cite figures that include this dark-money spending; ours doesn't.
Where they stand
Issue-by-issue comparison
Positions extracted from each candidate's campaign issues page by AI. Contested rows — where candidates disagree with each other — appear first.
| Statement | Desaulnier | Piccinini | Griffiths | Maisler | Hamilton | Frese | You |
|---|---|---|---|---|---|---|---|
Abortion A national law should protect access to abortion in every state. | — | ||||||
Abortion Tax dollars should not pay for abortions. | — | ||||||
Abortion Each state should set its own abortion laws. | — | ||||||
Abortion Access to in vitro fertilization (IVF) and other fertility treatments should be protected by federal law. | — | ||||||
Abortion Access to contraception should be guaranteed by federal law in all states (Right to Contraception Act). | — | ||||||
Economy Reducing the national debt should be a higher priority than new spending. | — | ||||||
Education Federal Title IX protections should explicitly include sexual orientation and gender identity. | — | ||||||
Environment The government should set legally enforceable limits on greenhouse gas emissions. | — | ||||||
Environment The government should stop subsidizing oil and gas companies. | — | ||||||
Guns Federal law should authorize court-issued red-flag orders allowing temporary firearm removal from people deemed a danger. | — | ||||||
Healthcare Federal enforcement of mental-health insurance parity (equal coverage to medical care) should be strengthened. | — | ||||||
Housing The government should spend more building affordable housing. | — | ||||||
Housing Cities should have to ease their zoning rules to qualify for federal infrastructure money. | — | ||||||
Immigration The U.S. should do more to enforce immigration laws and secure the border. | — | ||||||
Infrastructure The government should fund more electric vehicle charging stations. | — | ||||||
Labor Federal labor law should make it easier for workers to form unions (PRO Act-style reforms). | — | ||||||
Governance & Other There should be term limits for senators and representatives. | — | ||||||
Governance & Other Voters should be required to show photo ID, with the same rule in every state. | — | ||||||
Governance & Other Outside political spending — from PACs and super PACs — should be limited more strictly. | — | ||||||
Social Security Future workers should have to wait longer to collect full Social Security. | — | ||||||
Social Security Workers should be able to invest part of their Social Security in the stock market. | — | ||||||
Social Security Social Security benefits should be means-tested for high-income retirees. | — | ||||||
Taxes People making over $400,000 a year should pay higher taxes. | — | ||||||
Technology Federal law should require online platforms to implement specific safety measures for minors (Kids Online Safety Act-style). | — | ||||||
Veterans The VA should cover more veterans and more health conditions. | — | ||||||
Veterans Federal support for veterans exposed to burn pits and other toxic environments should be expanded. | — |
SupportsOpposesNo public positionRinged = confirmed by the campaign
About this race page
Candidate roster is sourced from the FEC's active-candidate list for the 2026 cycle. Fundraising totals reflect committee filings through the last reporting period.
Alignment % compares the candidate's extracted policy positions against your quiz answers. Positions are pulled from the candidate's campaign issues page by AI; we save the source quote for each position so you can verify the extraction. Candidates without a campaign issues page show position data pending — we're working through the roster and re-checking stale extractions every 90 days.
News coverage is from the GDELT 2.0 global news feed, filtered to a curated list of national, political, and regional outlets.