Incumbent Rep. Seth Moulton is vacating Massachusetts' 6th Congressional District seat to challenge Sen. Ed Markey in the 2026 Democratic Senate primary, leaving an open race ahead of the September 1 primary. Former Biden White House aide Dan Koh dominates trader consensus at 79.5% implied probability, driven by his fundraising lead—over $3.5 million raised—and high-profile endorsements, including President Biden's May 4 call and recent backing from Swampscott Select Board Chair Katie Phelan. Koh also leads the only credible poll, bolstering his frontrunner status amid recent forums and local Democratic town committee events. Challengers like Rachel Creemers (3.9%) and Tram Nguyen (3.3%) trail due to weaker resources and visibility, though field momentum could shift with further endorsements or debates.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jourDan Koh 80%
Tram Nguyen 3.3%
John Beccia 2.6%
Kevin Larivee 2.0%
$36,919 Vol.
$36,919 Vol.
Dan Koh
80%
Tram Nguyen
3%
John Beccia
3%
Kevin Larivee
2%
Diann Slavit Baylis
2%
Seth Moulton
2%
Jamie Zahlaway Belsito
2%
Rachel Creemers
1%
Mariah Lancaster
1%
Beth Andres-Beck
1%
Rick Jakious
1%
Dominick Pangallo
<1%
Dan Koh 80%
Tram Nguyen 3.3%
John Beccia 2.6%
Kevin Larivee 2.0%
$36,919 Vol.
$36,919 Vol.
Dan Koh
80%
Tram Nguyen
3%
John Beccia
3%
Kevin Larivee
2%
Diann Slavit Baylis
2%
Seth Moulton
2%
Jamie Zahlaway Belsito
2%
Rachel Creemers
1%
Mariah Lancaster
1%
Beth Andres-Beck
1%
Rick Jakious
1%
Dominick Pangallo
<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.
Marché ouvert : 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...Incumbent Rep. Seth Moulton is vacating Massachusetts' 6th Congressional District seat to challenge Sen. Ed Markey in the 2026 Democratic Senate primary, leaving an open race ahead of the September 1 primary. Former Biden White House aide Dan Koh dominates trader consensus at 79.5% implied probability, driven by his fundraising lead—over $3.5 million raised—and high-profile endorsements, including President Biden's May 4 call and recent backing from Swampscott Select Board Chair Katie Phelan. Koh also leads the only credible poll, bolstering his frontrunner status amid recent forums and local Democratic town committee events. Challengers like Rachel Creemers (3.9%) and Tram Nguyen (3.3%) trail due to weaker resources and visibility, though field momentum could shift with further endorsements or debates.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jour
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