Incumbent U.S. Senator Chris Coons commands a 94.5% implied probability on Polymarket to win Delaware's Democratic Senate primary on September 15, 2026, reflecting his strong renomination history in the state's reliably Democratic primary electorate and the lack of a viable challenge from Christopher Beardsley, who announced his bid in December 2025 but maintains minimal profile and fundraising. No notable developments have emerged in the past 30 days, underscoring trader confidence in Coons' incumbency edge amid Delaware's deep-blue politics. Potential shifts could arise from a late heavyweight entrant before the July 14 filing deadline, personal scandals, or health issues, though historical patterns show incumbents dominating such low-stakes primaries.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$11,099 Vol.
$11,099 Vol.
Chris Coons
95%
Christopher Beardsley
5%
$11,099 Vol.
$11,099 Vol.
Chris Coons
95%
Christopher Beardsley
5%
If no 2026 Delaware Democratic Senate Primary takes place, this market will resolve to "Other".
The resolution source for this market will be the first announcement of the results from the Delaware Democratic party, however an overwhelming consensus of credible reporting may suffice.
Market Opened: Dec 12, 2025, 11:02 AM ET
Resolver
0x2F5e3684c...If no 2026 Delaware Democratic Senate Primary takes place, this market will resolve to "Other".
The resolution source for this market will be the first announcement of the results from the Delaware Democratic party, however an overwhelming consensus of credible reporting may suffice.
Resolver
0x2F5e3684c...Incumbent U.S. Senator Chris Coons commands a 94.5% implied probability on Polymarket to win Delaware's Democratic Senate primary on September 15, 2026, reflecting his strong renomination history in the state's reliably Democratic primary electorate and the lack of a viable challenge from Christopher Beardsley, who announced his bid in December 2025 but maintains minimal profile and fundraising. No notable developments have emerged in the past 30 days, underscoring trader confidence in Coons' incumbency edge amid Delaware's deep-blue politics. Potential shifts could arise from a late heavyweight entrant before the July 14 filing deadline, personal scandals, or health issues, though historical patterns show incumbents dominating such low-stakes primaries.
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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