Republican incumbent Elise Stefanik's dominant position in the Republican-leaning NY-21 district anchors trader consensus at 76% for a GOP win, reflecting her strong fundraising, Trump endorsement, and unopposed primary victory on June 25. Recent Siena College polling shows Stefanik leading Democrat Dan Collins, a retired Air Force general who won his primary, by double digits amid the district's R+10 Cook Partisan Voter Index. Early voting has begun without major shifts, though Collins' military background appeals to independents; however, historical base rates for safe House incumbents and Stefanik's 2022 margin of 59%-41% sustain elevated Republican probabilities, with traders pricing in low upset risk ahead of November 5.
Experimental AI-generated summary referencing Polymarket data · UpdatedNY-21 House Election Winner
NY-21 House Election Winner
Republican Party
76%
Democratic Party
21%
Republican Party
76%
Democratic Party
21%
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: Jan 28, 2026, 11:23 AM ET
Resolver
0x2F5e3684c...Resolver
0x2F5e3684c...Republican incumbent Elise Stefanik's dominant position in the Republican-leaning NY-21 district anchors trader consensus at 76% for a GOP win, reflecting her strong fundraising, Trump endorsement, and unopposed primary victory on June 25. Recent Siena College polling shows Stefanik leading Democrat Dan Collins, a retired Air Force general who won his primary, by double digits amid the district's R+10 Cook Partisan Voter Index. Early voting has begun without major shifts, though Collins' military background appeals to independents; however, historical base rates for safe House incumbents and Stefanik's 2022 margin of 59%-41% sustain elevated Republican probabilities, with traders pricing in low upset risk ahead of November 5.
Experimental AI-generated summary referencing Polymarket data · Updated

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