In the open Democratic primary for Massachusetts' 6th Congressional District—vacated by Rep. Seth Moulton as he challenges Sen. Ed Markey—Dan Koh holds an 82% implied probability among traders, propelled by record fundraising topping $1.5 million in Q1 2026 alone, dwarfing rivals' totals per recent ActBlue disclosures. High-profile endorsements from Pete Buttigieg, ex-Rep. John Tierney, IBEW Local 2222, and local figures like Swampscott Select Board Vice Chair Doug Thompson, plus being first to qualify for the September 1 ballot, solidify his frontrunner status. The crowded field fragments opposition from contenders like Jamie Zahlaway Belsito and Tram Nguyen, with no public polls yet to challenge this financial and organizational edge.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedDan Koh 82%
Dominick Pangallo 4.0%
Tram Nguyen 4.0%
Jamie Zahlaway Belsito 3.8%
$32,469 Vol.
$32,469 Vol.
Dan Koh
82%
Dominick Pangallo
4%
Tram Nguyen
4%
Jamie Zahlaway Belsito
4%
Mariah Lancaster
3%
Seth Moulton
3%
Rick Jakious
2%
John Beccia
2%
Diann Slavit Baylis
2%
Kevin Larivee
1%
Rachel Creemers
1%
Beth Andres-Beck
<1%
Dan Koh 82%
Dominick Pangallo 4.0%
Tram Nguyen 4.0%
Jamie Zahlaway Belsito 3.8%
$32,469 Vol.
$32,469 Vol.
Dan Koh
82%
Dominick Pangallo
4%
Tram Nguyen
4%
Jamie Zahlaway Belsito
4%
Mariah Lancaster
3%
Seth Moulton
3%
Rick Jakious
2%
John Beccia
2%
Diann Slavit Baylis
2%
Kevin Larivee
1%
Rachel Creemers
1%
Beth Andres-Beck
<1%
If no nominee is announced by November 3, 2026, 11:59PM ET, this market will resolve to "Other".
The resolution source for this market will be a consensus of official Democrat sources, including https://democrats.org/.
Any replacement of the nominee before election day will not change the resolution of the market.
Market Opened: Nov 25, 2025, 3:39 PM ET
Resolver
0x2F5e3684c...If no nominee is announced by November 3, 2026, 11:59PM ET, this market will resolve to "Other".
The resolution source for this market will be a consensus of official Democrat sources, including https://democrats.org/.
Any replacement of the nominee before election day will not change the resolution of the market.
Resolver
0x2F5e3684c...In the open Democratic primary for Massachusetts' 6th Congressional District—vacated by Rep. Seth Moulton as he challenges Sen. Ed Markey—Dan Koh holds an 82% implied probability among traders, propelled by record fundraising topping $1.5 million in Q1 2026 alone, dwarfing rivals' totals per recent ActBlue disclosures. High-profile endorsements from Pete Buttigieg, ex-Rep. John Tierney, IBEW Local 2222, and local figures like Swampscott Select Board Vice Chair Doug Thompson, plus being first to qualify for the September 1 ballot, solidify his frontrunner status. The crowded field fragments opposition from contenders like Jamie Zahlaway Belsito and Tram Nguyen, with no public polls yet to challenge this financial and organizational edge.
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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