California's 45th District
U.S. House · California
Derek Tran won re-election by 20.0 points over Chuong Vo.
Top-two primary
Source: California Secretary of State unofficial resultsUpdated Nov 7, 2026, 12:54 PM ET
Where the race moved
Against the 2024 presidential vote
The seat's recent races
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Money in this race
Each line compares the two sides on one scale: their campaigns, and outside groups spending for them or against their opponent.
Top funders
Outside groups and direct contributors, ranked by what they put in; the color shows which candidate it helps.
| FairshakeFor Tran | $1M | |
| LCV Victory FundFor Tran | $284K | |
| AB PACFor Tran | $168.6K | |
| RISING TIDE COLLECTIVEFor Tran | $100K | |
| National Association of Realtors Political Action CommitteeFor Tran | $11.7K | |
| PIVOT VICTORY FUNDFor Tran | $11.2K | |
| Orange County PACFor Tran | $10K |
Campaign money: FEC, through Oct 14, 2026. Outside spending: independent expenditures by super PACs, parties and other groups, primary and general, as reported to the FEC through Nov 1, 2026, updated Nov 3, 2026. It leaves out spending not reported as independent expenditures (most issue ads and much dark money), so it understates all outside money.
Source: FEC campaign filings; FEC independent expendituresUpdated Nov 3, 2026, 1:05 AM ET
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Derek Tran
- 98%
- Chuong Vo
- 2%
- Projected margin
- D+15.5