Amish Shah won the Democratic primary for Arizona’s open 1st District seat on July 21, 2026, defeating the DCCC-backed candidate, while Jay Feely, endorsed by President Trump, secured the Republican nomination. The northeastern Phoenix and Scottsdale district remains a toss-up, with Trump carrying it by three points in 2024 and the prior Republican incumbent winning by roughly four points that cycle. Shah’s prior general-election experience against the seat and Democratic targeting of suburban battlegrounds have contributed to trader positioning favoring the party, while Feely’s outsider profile and national Republican support keep the contest competitive ahead of the November 3 general election. Primary outcomes and the district’s narrow partisan lean continue to shape implied probabilities in this swing House race.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAZ-01 House Election Winner
Democratic Party
76%
Republican Party
26%
Democratic Party
76%
Republican Party
26%
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, 11:39 AM 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...Amish Shah won the Democratic primary for Arizona’s open 1st District seat on July 21, 2026, defeating the DCCC-backed candidate, while Jay Feely, endorsed by President Trump, secured the Republican nomination. The northeastern Phoenix and Scottsdale district remains a toss-up, with Trump carrying it by three points in 2024 and the prior Republican incumbent winning by roughly four points that cycle. Shah’s prior general-election experience against the seat and Democratic targeting of suburban battlegrounds have contributed to trader positioning favoring the party, while Feely’s outsider profile and national Republican support keep the contest competitive ahead of the November 3 general election. Primary outcomes and the district’s narrow partisan lean continue to shape implied probabilities in this swing House race.
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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