Mark DeSaulnier
Democrat · CA-10 · U.S. House
Bio
Mark James DeSaulnier is an American politician who has served as a U.S. representative from California since 2015. He has represented the 10th congressional district since 2023, although it was previously numbered the 11th district for his first eight years in office. The district includes most of Contra Costa County, a suburban county in the East Bay. Until 2000, he was a member of the Republican Party; he has since been a member of the Democratic Party.
Full bio on Wikipedia →Overall lean (DW-NOMINATE)
Issue profile
Each issue runs left ↔ right, scored from how the member voted on bills tagged to that issue (−1…+1). Issues with too few votes are blank. Overall lean uses DW-NOMINATE.
Recent notable votes
Latest news
A Whiff of Rebellion From Trump’s Labor BoardEven Crystal S. Carey, Republican general counsel of the National Labor Relations Board, or NLRB, the federal agency that adjudicates labor-management disputes, thinks President Donald Trump and congressional Republicans are screwing up her agency.Carey, who …
The New Republic · June 5, 2026
How Trump Is Wrecking the Agency That Protects Worker’s Labor RightsA great riddle of the 2024 election is how Donald Trump managed to double (to 14 points) his advantage among working class voters, defined as those lacking a college degree, compared to 2016. This is a mystery because Trump spent much of his first term underm…
The New Republic · June 1, 2026
RFK Jr. Uses Vape Brand’s Marketing to Promote VapingHealth Secretary Robert F. Kennedy Jr. tried to claim Friday that vaping is healthier than smoking.Speaking before the House Education and Workforce Committee, Kennedy tried to peddle some of his classic pseudoscience. “There’s an argument for vapes,” Kennedy…
The New Republic · April 17, 2026
California Democrats Ask Kristi Noem Not to Reopen FCI Dublin as an Immigration JailThe lawmakers, including East Bay Rep. Mark DeSaulnier, said they were concerned about detention center conditions and deaths in ICE custody.
KQED · February 18, 2026
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