**Incumbent Sen. Ed Markey holds an 82.5% implied probability as the trader consensus favorite for Massachusetts' September 1 Democratic primary, driven by consistent double-digit polling leads over Rep. Seth Moulton and strong progressive backing.** A Suffolk University/Boston Globe poll conducted April 9-13 showed Markey leading 47%-30% among likely Democratic primary voters, expanding his edge as age concerns prove minimal despite his long tenure. Rep. Ayanna Pressley's March endorsement further consolidates support after she opted against running, while minor candidate Alexander Rikleen trails far behind. Markey's early April negative ad against Moulton, who pitches generational change, underscores campaign intensity, with Moulton at 14% reflecting his viable but uphill challenger status ahead of potential debates and fundraising pushes.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedEd Markey 83%
Seth Moulton 14%
Ayanna Pressley 2.8%
Alexander Rikleen <1%
Ed Markey
83%
Seth Moulton
14%
Ayanna Pressley
3%
Alexander Rikleen
<1%
Ed Markey 83%
Seth Moulton 14%
Ayanna Pressley 2.8%
Alexander Rikleen <1%
Ed Markey
83%
Seth Moulton
14%
Ayanna Pressley
3%
Alexander Rikleen
<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 Sen. Ed Markey holds an 82.5% implied probability as the trader consensus favorite for Massachusetts' September 1 Democratic primary, driven by consistent double-digit polling leads over Rep. Seth Moulton and strong progressive backing.** A Suffolk University/Boston Globe poll conducted April 9-13 showed Markey leading 47%-30% among likely Democratic primary voters, expanding his edge as age concerns prove minimal despite his long tenure. Rep. Ayanna Pressley's March endorsement further consolidates support after she opted against running, while minor candidate Alexander Rikleen trails far behind. Markey's early April negative ad against Moulton, who pitches generational change, underscores campaign intensity, with Moulton at 14% reflecting his viable but uphill challenger status ahead of potential debates and fundraising pushes.
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