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Mark DeSaulnier
U.S. Representative, California
2134 Rayburn House Office Building
Summary
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.
Source: Wikipedia · as of Jul 7, 2026
Views on the Issues
See where Rep. DeSaulnier stands — alongside Democratic and Republican positions.
Sponsored Legislation
See all 221 →HR 9045
HR 9045 · Introduced May 29, 2026 · Health
May 29, 2026: Referred to the House Committee on Education and Workforce.
HR 8608
HR 8608 · Introduced Apr 30, 2026 · Crime and Law Enforcement
Apr 30, 2026: Referred to the Committee on the Judiciary, and in addition to the Committee on Armed Services, for a period to be subsequently determined by the Speaker, in each case for consideration of such provisions as fall within the jurisdiction of the committee concerned.
HR 8607
HR 8607 · Introduced Apr 30, 2026 · Transportation and Public Works
Apr 30, 2026: Referred to the House Committee on Transportation and Infrastructure.
HR 8465
HR 8465 · Introduced Apr 23, 2026 · Education
Apr 23, 2026: Referred to the House Committee on Education and Workforce.
HR 8073
HR 8073 · Introduced Mar 25, 2026 · Education
Mar 25, 2026: Referred to the House Committee on Education and Workforce.
HR 7590
HR 7590 · Introduced Feb 17, 2026 · Education
Feb 17, 2026: Referred to the House Committee on Education and Workforce.
HR 6923
HR 6923 · Introduced Dec 23, 2025 · Environmental Protection
Dec 24, 2025: Referred to the Subcommittee on Railroads, Pipelines, and Hazardous Materials.
HR 6849
HR 6849 · Introduced Dec 18, 2025 · Government Operations and Politics
Dec 18, 2025: Referred to the House Committee on Oversight and Government Reform.
HR 6435
HR 6435 · Introduced Dec 4, 2025 · Transportation and Public Works
Feb 2, 2026: Referred to the Subcommittee on Highways and Transit.
HR 5731
HR 5731 · Introduced Oct 10, 2025 · Agriculture and Food
Dec 2, 2025: Referred to the Subcommittee on Nutrition and Foreign Agriculture.
Source: Congress.gov · as of Jul 7, 2026
Voting Analytics
Full record →Computed over Rep. DeSaulnier's 584 roll-call votes in the 119th Congress, of which 405were party-split (the two parties' majorities on opposite sides). Unanimous votes are excluded so the rates aren't inflated.
99.8%
Votes with the Democratic majority
On party-split votes
0.2%
Votes with the other party
The bipartisanship read
2.1%
Missed votes
Chamber median 2.2% · at or below median
Placement on the House's left–right spectrum
More liberalMore conservative
Based on how often Rep. DeSaulnier sided with the Republican majority on party-split votes, ranked against all representatives. This is a vote-agreement placement, not an academic ideology score.
Source: Clerk of the U.S. House (roll-call votes) · as of Sep 9, 2025
Landmark Legislation
Major bills from recent Congresses — outcomes and party vote breakdowns. For Rep. DeSaulnier's individual votes, view their full record on Congress.gov.
Inflation Reduction Act
Enacted2022 · H.R. 5376Largest climate investment in U.S. history; allowed Medicare to negotiate drug prices; reduced the federal deficit.
D: 50 yeaR: 0 yeaFinal: 51–50
CHIPS Act
Enacted2022 · H.R. 4346Invested $52 billion in domestic semiconductor manufacturing to reduce dependence on foreign chip supply chains.
D: 47 yeaR: 17 yeaFinal: 64–33