U.S. House · CA-10
Rep. Mark DeSaulnier (D)
Represents California’s 10th District, in office since Jan. 3, 2025. Official site
$1.68spent by the campaign for every vote cast in the 2024 general election
- This race$1.68
- Opponent$0.11
- CA average$10.22
- House average$8.15
Ranks 389 of 404 House members (1 = most spent per vote).
The 2024 race
| Candidate | Votes | Campaign spent | Per vote cast |
|---|---|---|---|
| Mark DeSaulnier (D), won | 242,325 (66.5%) | $611,352 | $1.68 |
| Katherine Piccinini (R) | 122,219 (33.5%) | $38,652 | $0.11 |
Total votes cast: 364,544. “Per vote cast” is the campaign’s total spending for that election divided by all votes cast in the race.
Tracked issue money in 2026
| Issue | Groups | Given | Bundled | Spent for | Spent against |
|---|---|---|---|---|---|
| HousingReal estate and home building | Realtors PAC (RPAC) | $4,000 | $0 | $0 | $0 |
| HousingLabor and tenant-side | SEIU COPE | $2,500 | $0 | $0 | $0 |
| Health care costsNurses, workers and patients | SEIU COPE | $2,500 | $0 | $0 | $0 |
| Energy & climateEnvironmental groups | Sierra Club Independent Action | $0 | $0 | $10 | $0 |
| IsraelGroups seeking policy changes | J Street PAC | $0 | $250 | $0 | $0 |
| EducationTeachers unions | NEA Fund, AFT COPE | $30,000 | $0 | $0 | $0 |
| DefenseDefense contractors | Boeing PAC | $2,000 | $0 | $0 | $0 |
Results: MIT Election Data + Science Lab. Spending: FEC candidate totals for the 2024 election (as of Oct. 6, 2026). How this is calculated.