2026 · U.S. HOUSE · CO-08
CO-08.
What do the markets say?
Colorado District 8 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
Source updated 9/15/2026, 5:19:07 PM ET
View contract at Kalshi ↗Question, identity & settlement rules
Will Democratic win the House race for CO-8?
HOUSECO8-26-DIf the House member sworn in for CO-08 for the term beginning in 2027 is a member of the Democratic party, then the market resolves to Yes.
Source updated 10/16/2026, 12:31:39 PM ET
View contract at Kalshi ↗Question, identity & settlement rules
Will Republican win the House race for CO-8?
HOUSECO8-26-RIf the House member sworn in for CO-08 for the term beginning in 2027 is a member of the Republican party, then the market resolves to Yes.
Polymarket
Source updated 10/25/2026, 5:30:37 PM ET
View contract at Polymarket ↗Question, identity & settlement rules
Will the Republican Party win the CO-08 House seat?
942324:0This market will resolve according to the party of the candidate who wins the CO-08 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 2026. A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources. This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Source updated 10/25/2026, 5:30:37 PM ET
View contract at Polymarket ↗Question, identity & settlement rules
Will the Democratic Party win the CO-08 House seat?
942325:0This market will resolve according to the party of the candidate who wins the CO-08 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 2026. A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources. This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
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
Colorado District 8 U.S. House election, 2026
GEMI-HOUSE26CO-08-MANNYRUTINELIf Manny Rutinel wins the 2026 U.S. House election in Colorado-08, 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%2Fd87e2bb2cb084a0bb9d5936394a9f233?alt=media&token=01422eba-fddb-496b-bd1f-fcb568ad5383&apiKey=1b77ce3a269a43e985e77f3d65f715ba).
YES bid/ask midpoint · daily observation
Collected during the scheduled daily refresh
View contract at Gemini ↗Question, identity & settlement rules
Colorado District 8 U.S. House election, 2026
GEMI-HOUSE26CO-08-GABEEVANSIf Gabe Evans wins the 2026 U.S. House election in Colorado-08, 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%2Fd87e2bb2cb084a0bb9d5936394a9f233?alt=media&token=01422eba-fddb-496b-bd1f-fcb568ad5383&apiKey=1b77ce3a269a43e985e77f3d65f715ba).
PredictIt
YES bid/ask midpoint · daily observation
Collected during the scheduled daily refresh
View contract at PredictIt ↗Question, identity & settlement rules
Colorado District 8 U.S. House election, 2026
8191:32096Which party will win the 2026 US House election in Colorado's 8th District? Outcome: Democratic. Prices refer to this provider’s YES contract. The original market page contains the binding settlement rules; nomination, candidate and party questions remain separate.
YES bid/ask midpoint · daily observation
Collected during the scheduled daily refresh
View contract at PredictIt ↗Question, identity & settlement rules
Colorado District 8 U.S. House election, 2026
8191:32095Which party will win the 2026 US House election in Colorado's 8th District? Outcome: Republican. Prices refer to this provider’s YES contract. The original market page contains the binding settlement rules; nomination, candidate and party questions remain separate.
Reading the Colorado election markets
These prices describe contracts about the colorado district 8 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 ↗