Incumbent Democratic Senator Chris Coons, seeking a fourth term after winning his September 15 primary with 78 percent of the vote, holds a commanding position in the 2026 Delaware Senate race against Republican Michael Katz. Delaware’s consistent Democratic lean, demonstrated by Kamala Harris’s 14.7-point margin in 2024, combined with the absence of Republican Senate victories since 1994 and limited general-election polling, underpins trader consensus reflected in the 97.2 percent implied probability for the Democratic nominee. Coons benefits from incumbency advantages and minimal primary opposition, while Katz, a former state senator who switched parties, faces structural headwinds in a state with limited Republican infrastructure. Forecasters across outlets rate the contest Solid or Safe Democratic. A realistic shift in odds would require late developments such as a major scandal, candidate health event, or unusually strong national Republican performance capable of overcoming the state’s baseline partisan margins.
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
Delaware Senate Election Winner
$21,018 Vol.
$21,018 Vol.
Nov 2, 2026
Democrat
97%
Republican
3%
$21,018 Vol.
$21,018 Vol.
Nov 2, 2026
Democrat
$11,061 Vol.
97%
Republican
$9,957 Vol.
3%
This market will resolve according to the winner of the 2026 midterm Delaware U.S. Senate election, inclusive of any run-offs.
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.Incumbent Democratic Senator Chris Coons, seeking a fourth term after winning his September 15 primary with 78 percent of the vote, holds a commanding position in the 2026 Delaware Senate race against Republican Michael Katz. Delaware’s consistent Democratic lean, demonstrated by Kamala Harris’s 14.7-point margin in 2024, combined with the absence of Republican Senate victories since 1994 and limited general-election polling, underpins trader consensus reflected in the 97.2 percent implied probability for the Democratic nominee. Coons benefits from incumbency advantages and minimal primary opposition, while Katz, a former state senator who switched parties, faces structural headwinds in a state with limited Republican infrastructure. Forecasters across outlets rate the contest Solid or Safe Democratic. A realistic shift in odds would require late developments such as a major scandal, candidate health event, or unusually strong national Republican performance capable of overcoming the state’s baseline partisan margins.
This market will resolve according to the winner of the 2026 midterm Delaware U.S. Senate election, inclusive of any run-offs.
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.
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
Volume
$21,018End Date
Nov 3, 2026Market Opened
Oct 13, 2025, 5:35 PM ETResolver
0x2F5e3684c...This market will resolve according to the winner of the 2026 midterm Delaware U.S. Senate election, inclusive of any run-offs.
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.Incumbent Democratic Senator Chris Coons, seeking a fourth term after winning his September 15 primary with 78 percent of the vote, holds a commanding position in the 2026 Delaware Senate race against Republican Michael Katz. Delaware’s consistent Democratic lean, demonstrated by Kamala Harris’s 14.7-point margin in 2024, combined with the absence of Republican Senate victories since 1994 and limited general-election polling, underpins trader consensus reflected in the 97.2 percent implied probability for the Democratic nominee. Coons benefits from incumbency advantages and minimal primary opposition, while Katz, a former state senator who switched parties, faces structural headwinds in a state with limited Republican infrastructure. Forecasters across outlets rate the contest Solid or Safe Democratic. A realistic shift in odds would require late developments such as a major scandal, candidate health event, or unusually strong national Republican performance capable of overcoming the state’s baseline partisan margins.
This market will resolve according to the winner of the 2026 midterm Delaware U.S. Senate election, inclusive of any run-offs.
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.
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.
Volume
$21,018End Date
Nov 3, 2026Market Opened
Oct 13, 2025, 5:35 PM ETResolver
0x2F5e3684c...Incumbent Democratic Senator Chris Coons, seeking a fourth term after winning his September 15 primary with 78 percent of the vote, holds a commanding position in the 2026 Delaware Senate race against Republican Michael Katz. Delaware’s consistent Democratic lean, demonstrated by Kamala Harris’s 14.7-point margin in 2024, combined with the absence of Republican Senate victories since 1994 and limited general-election polling, underpins trader consensus reflected in the 97.2 percent implied probability for the Democratic nominee. Coons benefits from incumbency advantages and minimal primary opposition, while Katz, a former state senator who switched parties, faces structural headwinds in a state with limited Republican infrastructure. Forecasters across outlets rate the contest Solid or Safe Democratic. A realistic shift in odds would require late developments such as a major scandal, candidate health event, or unusually strong national Republican performance capable of overcoming the state’s baseline partisan margins.
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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