Colorado's 8th congressional district remains one of the nation's closest House battlegrounds, with Republican incumbent Gabe Evans facing Democratic nominee Manny Rutinel in a rematch dynamic shaped by the seat's narrow 2024 result under 3,000 votes. Multiple forecasters rate the November 3 contest a toss-up, reflecting the district's mix of Denver suburbs, Weld County agriculture, and swing voter blocs where small shifts in turnout or messaging on costs and national issues could decide the outcome. The absence of general election polling so far, combined with Evans' fundraising edge and Rutinel's post-primary consolidation, keeps implied probabilities clustered around tight margins, with trader consensus pricing the race near even. Key catalysts ahead include upcoming polls, campaign spending surges, and any late developments in the broader midterm environment that could widen or narrow the projected gap.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedCO-08 House Election Margin of Victory
Republican 0-3% 22%
Democrat 21%+ 20%
Democrat 9-12% 20%
Democrat 3-6% 18%

Democrat 21%+
20%

Democrat 18-21%
12%

Democrat 15-18%
26%

Democrat 12-15%
5%

Democrat 9-12%
20%

Democrat 6-9%
14%

Democrat 3-6%
18%

Democrat 0-3%
14%

Republican 0-3%
22%

Republican 3%+
4%
Republican 0-3% 22%
Democrat 21%+ 20%
Democrat 9-12% 20%
Democrat 3-6% 18%

Democrat 21%+
20%

Democrat 18-21%
12%

Democrat 15-18%
26%

Democrat 12-15%
5%

Democrat 9-12%
20%

Democrat 6-9%
14%

Democrat 3-6%
18%

Democrat 0-3%
14%

Republican 0-3%
22%

Republican 3%+
4%
This market will resolve according to the margin of victory between the top two candidates in the specified election.
The "margin of victory" is defined as the absolute difference between the percentages of valid votes received by the first-place and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election.
For purposes of this market, candidates nominated by the Democratic & Republican Parties will represent the options for "Democrat" and "Republican," respectively. Independent candidates will not represent options for either party. The candidates may be named in the contract for the convenience of traders. In the event that any named candidate is replaced as the nominee of their respective party prior to election day, the name in the contract will be updated and the market will resolve based on the replacement nominee of the party.
If the reported value falls exactly between two brackets, then this market will resolve to the higher margin bracket.
If two or more candidates tie for the most valid votes in this election, and the tie is between two candidates listed, this market will resolve to the lowest margin bracket for the candidate whose ballot-listed last name comes first in alphabetical order. If the tie is between a listed candidate and an unlisted candidate, this market will resolve to the lowest margin bracket for the listed candidate. If the tie is between two or more unlisted candidates, this market will resolve to "Other." If the listed candidate is represented in this market group as "Republican" or "Democrat" their ballot-listed last name will still be used for tiebreaking.
This market will resolve based on the official vote count once the count has been made official.
If the election results are not known definitively by June 30, 2027, 11:59 PM ET, this market will resolve to "Other".
If a recount is initiated before the vote total has been made official, the market will remain open until the recount is completed and the vote is made official.
The primary resolution source for this market will be the official results of the 2026 CO-08 House election as published by the state electoral authority responsible for certifying the results of the election; however, an overwhelming consensus of credible reporting may also be used.
Market Opened: Aug 7, 2026, 3:14 PM ET
Resolver
0x69c47De9D...This market will resolve according to the margin of victory between the top two candidates in the specified election.
The "margin of victory" is defined as the absolute difference between the percentages of valid votes received by the first-place and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election.
For purposes of this market, candidates nominated by the Democratic & Republican Parties will represent the options for "Democrat" and "Republican," respectively. Independent candidates will not represent options for either party. The candidates may be named in the contract for the convenience of traders. In the event that any named candidate is replaced as the nominee of their respective party prior to election day, the name in the contract will be updated and the market will resolve based on the replacement nominee of the party.
If the reported value falls exactly between two brackets, then this market will resolve to the higher margin bracket.
If two or more candidates tie for the most valid votes in this election, and the tie is between two candidates listed, this market will resolve to the lowest margin bracket for the candidate whose ballot-listed last name comes first in alphabetical order. If the tie is between a listed candidate and an unlisted candidate, this market will resolve to the lowest margin bracket for the listed candidate. If the tie is between two or more unlisted candidates, this market will resolve to "Other." If the listed candidate is represented in this market group as "Republican" or "Democrat" their ballot-listed last name will still be used for tiebreaking.
This market will resolve based on the official vote count once the count has been made official.
If the election results are not known definitively by June 30, 2027, 11:59 PM ET, this market will resolve to "Other".
If a recount is initiated before the vote total has been made official, the market will remain open until the recount is completed and the vote is made official.
The primary resolution source for this market will be the official results of the 2026 CO-08 House election as published by the state electoral authority responsible for certifying the results of the election; however, an overwhelming consensus of credible reporting may also be used.
Resolver
0x69c47De9D...Colorado's 8th congressional district remains one of the nation's closest House battlegrounds, with Republican incumbent Gabe Evans facing Democratic nominee Manny Rutinel in a rematch dynamic shaped by the seat's narrow 2024 result under 3,000 votes. Multiple forecasters rate the November 3 contest a toss-up, reflecting the district's mix of Denver suburbs, Weld County agriculture, and swing voter blocs where small shifts in turnout or messaging on costs and national issues could decide the outcome. The absence of general election polling so far, combined with Evans' fundraising edge and Rutinel's post-primary consolidation, keeps implied probabilities clustered around tight margins, with trader consensus pricing the race near even. Key catalysts ahead include upcoming polls, campaign spending surges, and any late developments in the broader midterm environment that could widen or narrow the projected gap.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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