The open seat created by Republican incumbent Ryan Zinke’s retirement has elevated Democratic prospects in Montana’s 1st Congressional District, which includes Democratic-leaning population centers in Missoula and Bozeman. Primaries on June 2, 2026, produced nominees Aaron Flint for Republicans and Sam Forstag for Democrats, with the latter drawing endorsements from progressive figures and union backing that traders view as boosting general-election turnout potential. The district’s partisan voting index and recent election margins indicate a competitive environment rather than a safe hold, leading market participants to assign the Democratic Party a 61% implied probability of victory in November despite conventional ratings classifying the race as likely Republican. Scheduled general-election dynamics, including candidate messaging on local economic issues and turnout in western Montana counties, remain the primary variables that could shift consensus before November 3.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedMT-01 House Election Winner
Democratic Party
64%
Republican Party
38%
Democratic Party
64%
Republican Party
38%
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/).
Market Opened: Dec 16, 2025, 12:19 PM ET
Resolver
0x2F5e3684c...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/).
Resolver
0x2F5e3684c...The open seat created by Republican incumbent Ryan Zinke’s retirement has elevated Democratic prospects in Montana’s 1st Congressional District, which includes Democratic-leaning population centers in Missoula and Bozeman. Primaries on June 2, 2026, produced nominees Aaron Flint for Republicans and Sam Forstag for Democrats, with the latter drawing endorsements from progressive figures and union backing that traders view as boosting general-election turnout potential. The district’s partisan voting index and recent election margins indicate a competitive environment rather than a safe hold, leading market participants to assign the Democratic Party a 61% implied probability of victory in November despite conventional ratings classifying the race as likely Republican. Scheduled general-election dynamics, including candidate messaging on local economic issues and turnout in western Montana counties, remain the primary variables that could shift consensus before November 3.
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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