U.S. House · CA-21
Rep. Jim Costa (D)
Represents California’s 21st District, in office since Jan. 3, 2025. Official site
$9.64spent by the campaign for every vote cast in the 2024 general election
- This race$9.64
- Opponent$3.85
- CA average$10.22
- House average$8.15
Ranks 100 of 404 House members (1 = most spent per vote).
The 2024 race
| Candidate | Votes | Campaign spent | Per vote cast |
|---|---|---|---|
| Jim Costa (D), won | 102,798 (52.6%) | $1,885,604 | $9.64 |
| Michael Maher (R) | 92,733 (47.4%) | $753,557 | $3.85 |
Total votes cast: 195,531. “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), NAHB BUILD-PAC | $15,000 | $0 | $0 | $0 |
| Health care costsHospitals, doctors and drugmakers | AHA PAC | $2,000 | $0 | $0 | $0 |
| AI & data centersAI and tech company PACs | Amazon PAC | $2,000 | $0 | $0 | $0 |
| Energy & climateOil and gas industry | ExxonMobil PAC, Chevron PAC, ConocoPhillips PAC, API PAC | $10,500 | $0 | $0 | $0 |
| Energy & climateEnvironmental groups | LCV Action Fund | $50 | $0 | $0 | $0 |
| Energy & climateClean energy industry | CleanPower PAC | $1,000 | $0 | $0 | $0 |
| IsraelAIPAC and allied groups | AIPAC PAC | $9,497 | $68,982 | $0 | $0 |
| EducationTeachers unions | NEA Fund, AFT COPE | $9,000 | $0 | $0 | $0 |
| DefenseDefense contractors | Lockheed Martin PAC, RTX PAC, Boeing PAC | $8,000 | $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.