California's 10th Congressional District, 2026

New district lines

Mark DeSaulnier (D) vs. Jeff Frese (R): California's 10th District election is on Tuesday, November 3, 2026, part of the 2026 midterm elections.

Mark DeSaulnier, Democratic candidate for U.S. House in California
Mark DeSaulnier
Democratic
U.S. Representative, CA-10, since 2015Voting record →
Campaign money →FEC filing ↗
JF
Jeff Frese
Republican
civicAPI ↗
Election day
Tuesday, Nov. 3, 2026
Term
Jan 3, 2027 – Jan 3, 2029

Who is running for California's 10th Congressional District?

Mark DeSaulnier (D) vs. Jeff Frese (R)

New district lines for 2026

Drawn by Proposition 50, approved by voters in November 2025. Source ↗

Sitting members on this ballot

When is the election?

Tuesday, Nov. 3, 2026

This race is for California's 10th Congressional District (CA-10, District 10). Find your district on the district map.

Candidate list: civicAPI ↗