Incumbent Democrat Chris Coons holds a commanding position in the 2026 Delaware Senate race due to the state's consistent Democratic lean, reflected in Kamala Harris's 14.7-point margin in 2024 and the absence of a Republican Senate victory since 1994. Coons secured his party's nomination with 78% in the September 15 primary against minor challengers, while Republican Michael Katz advanced with 77% on the other side. Forecasters rate the contest Solid or Safe Democratic, aligning with trader consensus on the outcome. Factors sustaining these odds include Coons' long tenure since 2010 and limited Republican infrastructure in the state. Scenarios that could narrow the gap include major national political shifts, candidate health developments, or unusually high turnout favoring the challenger before November 3.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedDelaware Senate Election Winner
$21,018 Vol.
$21,018 Vol.

Democrat
97%

Republican
3%
$21,018 Vol.
$21,018 Vol.

Democrat
97%

Republican
3%
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, 5:35 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 Democrat Chris Coons holds a commanding position in the 2026 Delaware Senate race due to the state's consistent Democratic lean, reflected in Kamala Harris's 14.7-point margin in 2024 and the absence of a Republican Senate victory since 1994. Coons secured his party's nomination with 78% in the September 15 primary against minor challengers, while Republican Michael Katz advanced with 77% on the other side. Forecasters rate the contest Solid or Safe Democratic, aligning with trader consensus on the outcome. Factors sustaining these odds include Coons' long tenure since 2010 and limited Republican infrastructure in the state. Scenarios that could narrow the gap include major national political shifts, candidate health developments, or unusually high turnout favoring the challenger 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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