People / Compare / Jim Costa and Mark DeSaulnier
How do Jim Costa and Mark DeSaulnier compare?
Jim Costa and Mark DeSaulnier voted the same way on 89% of the 634 roll calls where both voted in the 119th Congress (median for two House members of the same party 95%), as of Nov 2, 2026.
Both represent California in the House.
| Measure | Costa | DeSaulnier | House median |
|---|---|---|---|
| Attendance | 96% | 98% | 98% |
| With own party, party-line votes | 86% | 100% | 98% |
| Same vote as the other party | 22% | 9% | 12% |
Source: Voteview: Costa · Voteview: DeSaulnier · How we measure · Updated Nov 2, 2026
Where they agree and split, by policy area
| Policy area | Same vote |
|---|---|
| Energy | 67% |
| Environmental Protection | 73% |
| Crime and Law Enforcement | 75% |
| Education | 63% |
| Finance and Financial Sector | 76% |
| Government Operations and Politics | 85% |