In the open MA-06 Democratic primary—sparked by Rep. Seth Moulton's Senate challenge to Sen. Ed Markey—former Biden aide Dan Koh commands trader consensus at 79.5% implied probability, driven by his fundraising dominance, exceeding rivals' combined totals in early 2026 reports, and high-profile endorsements including Pete Buttigieg in February and President Biden on May 4 praising his record on working families. Local support, such as Swampscott Select Board Chair Katie Phelan's recent backing, further bolsters his position in the crowded field ahead of the September 1 primary. Fragmented opposition, with Tram Nguyen and others below 4%, reflects limited momentum despite candidate forums highlighting federal funding visions.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedDan Koh 80%
Rachel Creemers 3.4%
Tram Nguyen 3.3%
John Beccia 2.8%
$36,877 Vol.
$36,877 Vol.
Dan Koh
80%
Rachel Creemers
3%
Tram Nguyen
3%
John Beccia
3%
Diann Slavit Baylis
2%
Mariah Lancaster
2%
Jamie Zahlaway Belsito
2%
Kevin Larivee
2%
Seth Moulton
1%
Rick Jakious
1%
Beth Andres-Beck
<1%
Dominick Pangallo
<1%
Dan Koh 80%
Rachel Creemers 3.4%
Tram Nguyen 3.3%
John Beccia 2.8%
$36,877 Vol.
$36,877 Vol.
Dan Koh
80%
Rachel Creemers
3%
Tram Nguyen
3%
John Beccia
3%
Diann Slavit Baylis
2%
Mariah Lancaster
2%
Jamie Zahlaway Belsito
2%
Kevin Larivee
2%
Seth Moulton
1%
Rick Jakious
1%
Beth Andres-Beck
<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.
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 MA-06 Democratic primary—sparked by Rep. Seth Moulton's Senate challenge to Sen. Ed Markey—former Biden aide Dan Koh commands trader consensus at 79.5% implied probability, driven by his fundraising dominance, exceeding rivals' combined totals in early 2026 reports, and high-profile endorsements including Pete Buttigieg in February and President Biden on May 4 praising his record on working families. Local support, such as Swampscott Select Board Chair Katie Phelan's recent backing, further bolsters his position in the crowded field ahead of the September 1 primary. Fragmented opposition, with Tram Nguyen and others below 4%, reflects limited momentum despite candidate forums highlighting federal funding visions.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



Beware of external links.
Beware of external links.
Frequently Asked Questions