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U.S. House · CA-10 · Democratic candidate · 2026

Mark DeSaulnier

Democratic candidate for California's 10th Congressional District

A Contra Costa congressman and former local and state legislator focused on worker rights, housing near transit, medical research and reproductive freedom.

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Portrait of Mark DeSaulnier
DistrictCA-10
OfficeCongress
ElectionNov. 3, 2026

Policy priorities

Where Mark stands.

Campaign position

Protect union rights and safe workplaces

  • He backs collective bargaining and workplace protections so wages and benefits keep pace with costs and workers have a voice as technology changes

Campaign position

Build affordable housing near transit

  • He supports equitable transit-oriented development and affordable housing near reliable transportation to reduce housing pressure and congestion

Campaign position

Protect medical research and help patients navigate care

  • He supports NIH research funding and proposes patient-navigation support to help people find appropriate care after a serious diagnosis

Campaign position

Support local nonprofit newsrooms

  • He backs nonprofit status for local journalism and fair compensation from technology platforms to help sustain community reporting

Campaign position

Expand early-childhood mental-health support

  • He supports mental-health services through Head Start and stronger accountability for social-media platforms affecting young people's wellbeing

Campaign position

Protect abortion, contraception and IVF access

  • He supports federal reproductive-rights protections, including abortion care and access to contraception and IVF without political interference

Record and background

Record & experience.

  1. 2022

    Accomplishment

    Authored enacted immigration relief for the Bueso family

    He sponsored H.R. 785 providing immigration relief for Maria Isabel Bueso Barrera and her parents. Congress passed it and it became Private Law 117-2 on December 27, 2022.

  • Experience

    Concord councilmember

    Served on the Concord City Council.

  • Experience

    Contra Costa County supervisor

    Served on the Contra Costa County Board of Supervisors.

  • Experience

    California assemblymember

    Served in the California Assembly.

  • Experience

    California state senator

    Served in the California Senate.

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