California 45th District House Race 2026
Toss-upNovember 3, 2026Demonstration data — not a live government record
JW
James Whitman
Democrat
Polling avg
47.2%
Forecast prob
54%
KD
Karen Diehl
Republican
Polling avg
45.6%
Forecast prob
46%
Forecast probability over time
James Whitman
Karen Diehl
Rating history
2025-11-10Lean D
2026-02-23Toss-up
2026-06-15Toss-up
Prediction-market probabilities reflect participant expectations and can be incorrect. Polling averages are computed from demonstration data — see the methodology page for how real averages would be weighted.