California18th District2026 HOUSE FORECAST
2026 California 18th District House Forecast:
Proprietary forecast for California's 18th congressional district House election between Democrat Zoe Lofgren and Republican Shane Lewis. This page will update with a daily set of 100,000 new simulations as race fundamentals change in order to produce race odds, projected margin, and forecasted vote share. This page also includes polling averages when available.
The 2026 California 18th District House election features Democrat Zoe Lofgren and Republican Shane Lewis. Incumbent Representative Zoe Lofgren is seeking reelection to a seventeenth term. In 2024, Kamala Harris won California's 18th congressional district by 21.5%, and the election for the district's House seat is rated as solid Democratic in 2026. California conducted mid-decade redistricting prior to the midterms, and the state's new district map benefits Democrats overall.
- Year
- 2026
- Race
- House
- District
- CA-18
- Democratic candidate
- Zoe Lofgren
- Republican candidate
- Shane Lewis
- Incumbent / open seat
- Zoe Lofgren
- Forecast rating
- Solid D
- Projected vote
- 70.0% D / 30.0% R
- Projected margin
- D +40.0
- Forecast odds
- 99.9% D / 0.1% R
- Forecast last updated
- 12:00 AM on July 2, 2026
- Polling average
- —
- Polling average margin
- —
- Polling last updated
- —
- Polls included
- 0
- Latest poll
- —