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2026 candidates we're tracking in CA-10
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Mark DeSaulnier
Democratic
Incumbent
Mark DeSaulnier is the Democratic candidate for California's 10th Congressional District on the November 3, 2026 ballot, per the Secretary of State's Certified List of Candidates (ballot designation: United States Congressman). Mark DeSaulnier is the sitting m…
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Jeff Frese
Republican
Jeff Frese is the Republican nominee for California's 10th Congressional District. He supports eight-year term limits for members of Congress and opposes one-size-fits-all federal housing mandates, per his campaign profile. No campaign website or questionnaire…
About this race
California's 10th Congressional District elects one member of the U.S. House of Representatives to a two-year term. Every House seat in the country is on the ballot in 2026. The California primary is Tuesday, June 2, 2026, and the general election is Tuesday, November 3, 2026.