California 10th — House 2026 Primary
The California 10th — House primary is scheduled for June 2, 2026. The model makes Democrat Mark DeSaulnier the clear favorite at 79%, ahead of Republican Katherine Piccinni at 5% in a 7-candidate field. Mark DeSaulnier is the incumbent, leads the field in reported fundraising, and has the most tracked endorsements. No public polling is available for this race, so the forecast leans on fundraising, endorsements, candidate profiles, and historical results.
Current win probabilities
- Mark DeSaulnier (incumbent) — 79%
- Katherine Piccinni — 5%
- Angela Griffiths — 4%
- Jeff Frese — 3%
- Mitchell Maisler — 3%
- Joshua Hamilton — 3%
- Bob Rowland — 3%
Probabilities update daily from polls, fundraising, endorsements, and historical results.