Incumbent U.S. Senator Ed Markey holds a commanding position in the Massachusetts Democratic primary for the Senate seat, aligning with trader consensus at 71 percent. His decades-long congressional tenure since 1977 has built substantial name recognition, donor networks, and institutional backing within the party. Representative Seth Moulton trails at 25.5 percent, with his challenge centered on calls for generational change and new leadership after announcing his bid in October 2025. Recent Emerson College polling from early May shows the race tightening to a five-point Markey lead among likely primary voters, with nearly 30 percent undecided. Minor candidates Alexander Rikleen and Ayanna Pressley register under 1 percent each in the market, reflecting their limited visibility ahead of the September 1 primary.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedEd Markey 71%
Seth Moulton 25%
Alexander Rikleen <1%
Ayanna Pressley <1%
$13,320 Vol.
$13,320 Vol.
Ed Markey
71%
Seth Moulton
25%
Alexander Rikleen
1%
Ayanna Pressley
1%
Ed Markey 71%
Seth Moulton 25%
Alexander Rikleen <1%
Ayanna Pressley <1%
$13,320 Vol.
$13,320 Vol.
Ed Markey
71%
Seth Moulton
25%
Alexander Rikleen
1%
Ayanna Pressley
1%
If no 2026 Massachusetts 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 Massachusetts Democratic party, however an overwhelming consensus of credible reporting may suffice.
Market Opened: Dec 2, 2025, 3:26 PM ET
Resolver
0x2F5e3684c...If no 2026 Massachusetts 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 Massachusetts Democratic party, however an overwhelming consensus of credible reporting may suffice.
Resolver
0x2F5e3684c...Incumbent U.S. Senator Ed Markey holds a commanding position in the Massachusetts Democratic primary for the Senate seat, aligning with trader consensus at 71 percent. His decades-long congressional tenure since 1977 has built substantial name recognition, donor networks, and institutional backing within the party. Representative Seth Moulton trails at 25.5 percent, with his challenge centered on calls for generational change and new leadership after announcing his bid in October 2025. Recent Emerson College polling from early May shows the race tightening to a five-point Markey lead among likely primary voters, with nearly 30 percent undecided. Minor candidates Alexander Rikleen and Ayanna Pressley register under 1 percent each in the market, reflecting their limited visibility ahead of the September 1 primary.
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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