The open seat created by incumbent Democratic Senator Gary Peters’ retirement has positioned the race as a key battleground, with traders assigning a 74.5% implied probability to a Democratic victory in the November 2026 general election. Recent polling averages show Republican nominee Mike Rogers leading hypothetical matchups against leading Democratic primary contenders Abdul El-Sayed, Mallory McMorrow, and Haley Stevens by narrow margins of 1 to 5 points, reflecting the state’s closely divided electorate following Donald Trump’s narrow 2024 presidential win. The August 4 Democratic primary remains competitive among the three frontrunners, with El-Sayed edging recent surveys, while Rogers holds a clear path to the Republican nomination. These dynamics, alongside Michigan’s historical midterm voting patterns and Democratic fundraising advantages in the state, underpin the current trader consensus favoring the Democratic outcome.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedMichigan Senate Election Winner
$113,316 Vol.
$113,316 Vol.

Democrat
75%

Republican
27%
$113,316 Vol.
$113,316 Vol.

Democrat
75%

Republican
27%
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, 5:07 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...The open seat created by incumbent Democratic Senator Gary Peters’ retirement has positioned the race as a key battleground, with traders assigning a 74.5% implied probability to a Democratic victory in the November 2026 general election. Recent polling averages show Republican nominee Mike Rogers leading hypothetical matchups against leading Democratic primary contenders Abdul El-Sayed, Mallory McMorrow, and Haley Stevens by narrow margins of 1 to 5 points, reflecting the state’s closely divided electorate following Donald Trump’s narrow 2024 presidential win. The August 4 Democratic primary remains competitive among the three frontrunners, with El-Sayed edging recent surveys, while Rogers holds a clear path to the Republican nomination. These dynamics, alongside Michigan’s historical midterm voting patterns and Democratic fundraising advantages in the state, underpin the current trader consensus favoring the Democratic outcome.
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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