Former U.S. Senator John E. Sununu commands 90% implied probability as the Republican primary frontrunner for New Hampshire's 2026 U.S. Senate race against incumbent Democrat Maggie Hassan, driven by his extensive incumbency experience, strong family political legacy in the state, and lack of a dominant challenger following Governor Chris Sununu's recent public decision against entering the contest. Scott Brown's 7.5% share reflects ongoing speculation about a potential comeback from the former interim Senator and 2014 nominee, while 2024 GOP nominee Dan Innis trails at 2.5% amid questions over his general election performance. With the primary over a year away in September 2026, trader consensus emphasizes Sununu's name recognition and fundraising edge, though high-profile endorsements or surprise candidacies could shift dynamics.
Experimental AI-generated summary referencing Polymarket data · UpdatedJohn E. Sununu 92%
Scott Brown 4.9%
Dan Innis 2.4%
Chris Sununu 1.5%
John E. Sununu
92%
Scott Brown
5%
Dan Innis
2%
Chris Sununu
2%
John E. Sununu 92%
Scott Brown 4.9%
Dan Innis 2.4%
Chris Sununu 1.5%
John E. Sununu
92%
Scott Brown
5%
Dan Innis
2%
Chris Sununu
2%
If no 2026 New Hampshire Republican 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 New Hampshire Republican party, however an overwhelming consensus of credible reporting may suffice.
Market Opened: Dec 2, 2025, 3:26 PM ET
Resolver
0x2F5e3684c...Resolver
0x2F5e3684c...Former U.S. Senator John E. Sununu commands 90% implied probability as the Republican primary frontrunner for New Hampshire's 2026 U.S. Senate race against incumbent Democrat Maggie Hassan, driven by his extensive incumbency experience, strong family political legacy in the state, and lack of a dominant challenger following Governor Chris Sununu's recent public decision against entering the contest. Scott Brown's 7.5% share reflects ongoing speculation about a potential comeback from the former interim Senator and 2014 nominee, while 2024 GOP nominee Dan Innis trails at 2.5% amid questions over his general election performance. With the primary over a year away in September 2026, trader consensus emphasizes Sununu's name recognition and fundraising edge, though high-profile endorsements or surprise candidacies could shift dynamics.
Experimental AI-generated summary referencing Polymarket data · Updated



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