2026 · U.S. HOUSE · CA-40
CA-40.
What do the markets say?
California District 40 U.S. House election, 2026. Compare each source’s prices and how they have changed.
THE RACE OVER TIME
How the markets have moved
Historical prices retain each source’s metric: Kalshi daily bid/ask midpoint, Polymarket outcome price, and ForecastEx daily close. Gemini and PredictIt show stored daily bid/ask observations where older provider history is unavailable. ForecastEx file dates use a 12:00 UTC display anchor. Lines join available observations; missing dates are not filled.
Accessible chart data
| Source | Outcome | UTC time | Price |
|---|
What each market says
INDEPENDENT CONTRACTS · NO AVERAGINGThe same race can have different resolution rules across sources. Each price below belongs to its own contract.
Kalshi
No verified contract for this race from Kalshi.
Polymarket
No verified contract for this race from Polymarket.
ForecastEx
No verified contract for this race from ForecastEx.
Gemini
YES bid/ask midpoint · daily observation
Collected during the scheduled daily refresh
View contract at Gemini ↗Question, identity & settlement rules
California District 40 U.S. House election, 2026
GEMI-HOUSE26CA-40-KENCALVERTIf Ken Calvert wins the 2026 U.S. House election in CA-40, then this market resolves to Yes. Outcome should be verified from the applicable state election authority and widely reported national sources. View the [full rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2F8634b5141fe14d6783a347884150d6bd?alt=media&token=f103a20d-e51f-47f5-ad36-03aaaafec1cc&apiKey=1b77ce3a269a43e985e77f3d65f715ba).
YES bid/ask midpoint · daily observation
Collected during the scheduled daily refresh
View contract at Gemini ↗Question, identity & settlement rules
California District 40 U.S. House election, 2026
GEMI-HOUSE26CA-40-YOUNGKIMIf Young Kim wins the 2026 U.S. House election in CA-40, then this market resolves to Yes. Outcome should be verified from the applicable state election authority and widely reported national sources. View the [full rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2F8634b5141fe14d6783a347884150d6bd?alt=media&token=f103a20d-e51f-47f5-ad36-03aaaafec1cc&apiKey=1b77ce3a269a43e985e77f3d65f715ba).
PredictIt
No verified contract for this race from PredictIt.
Reading the California election markets
These prices describe contracts about the california district 40 u.s. house election, 2026, rather than the share of voters supporting a party. A 60% contract price is not a prediction of a 60% vote share.
Kalshi, Gemini and PredictIt use valid YES bid/ask midpoints. Polymarket uses its outcome-price feed. ForecastEx uses the most recently published daily closing price; its file date is shown. We show Democratic, Republican and any verified independent contracts separately, without forcing the prices to add up to 100%.
History comes from provider time series and observations stored by 567politics. If a provider is unavailable, available stored history is labeled. Missing data stays missing.
Contract mapping checked 2026-10-25. Full methodology ↗