Incumbent Democratic Governor Janet Mills is term-limited after two terms, creating an open seat in the November 2026 Maine gubernatorial election that traders price at 88.5% for a Democratic win, reflecting the party's historical edge—Mills won re-election by double digits in 2022—and a strong primary field. Recent May polls, including Schoen Cooperman (May 4) and GQR (May 9), show former DHHS Commissioner Nirav Shah leading the crowded Democratic primary at 28-32% first-choice support, prevailing in ranked-choice voting simulations ahead of the June 9 contest. Republicans at 12.5% face a fragmented field, with Ben Midgley's April GOP straw poll victory but no comparable polling momentum or unified path against Maine's left-leaning electorate.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Democrat
89%

Republican
13%

Democrat
89%

Republican
13%
A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Market Opened: Oct 13, 2025, 6:29 PM ET
Resolver
0x2F5e3684c...A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Resolver
0x2F5e3684c...Incumbent Democratic Governor Janet Mills is term-limited after two terms, creating an open seat in the November 2026 Maine gubernatorial election that traders price at 88.5% for a Democratic win, reflecting the party's historical edge—Mills won re-election by double digits in 2022—and a strong primary field. Recent May polls, including Schoen Cooperman (May 4) and GQR (May 9), show former DHHS Commissioner Nirav Shah leading the crowded Democratic primary at 28-32% first-choice support, prevailing in ranked-choice voting simulations ahead of the June 9 contest. Republicans at 12.5% face a fragmented field, with Ben Midgley's April GOP straw poll victory but no comparable polling momentum or unified path against Maine's left-leaning electorate.
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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