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Politics·Primaries

Massachusetts Democratic Senate Primary Winner

Market icon
Politics·Primaries

Massachusetts Democratic Senate Primary Winner

Ed Markey 89%

Seth Moulton 10%

Ayanna Pressley 2.5%

Alexander Rikleen <1%

Polymarket
NEW

Ed Markey 89%

Seth Moulton 10%

Ayanna Pressley 2.5%

Alexander Rikleen <1%

Polymarket
NEW

Ed Markey

$0 Vol.

89%

Seth Moulton

$1,255 Vol.

10%

Ayanna Pressley

$0 Vol.

2%

Alexander Rikleen

$0 Vol.

<1%

This market will resolve according to the winner of the Democratic Primary for United States Senator from Massachusetts. 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.Incumbent Senator Ed Markey's strong polling lead and fundraising dominance drive trader consensus favoring him heavily in the September 3 Massachusetts Democratic Senate primary. The latest Emerson College poll (August 23-26) shows Markey at 48% support versus U.S. Rep. Seth Moulton's 17%, with Boston City Councilor Alexander Rikleen and U.S. Rep. Ayanna Pressley—neither gaining significant traction—far behind; Pressley has not entered the race despite lingering name recognition. Markey reinforced his position in an August 28 debate, touting endorsements from Elizabeth Warren and a progressive record, while his $6 million cash-on-hand dwarfs Moulton's $1.5 million. Moulton's moderate critique of party extremes appeals narrowly, but incumbency advantages and base rates of primary reelection solidify the pricing.

Incumbent Senator Ed Markey's strong polling lead and fundraising dominance drive trader consensus favoring him heavily in the September 3 Massachusetts Democratic Senate primary. The latest Emerson College poll (August 23-26) shows Markey at 48% support versus U.S. Rep. Seth Moulton's 17%, with Boston City Councilor Alexander Rikleen and U.S. Rep. Ayanna Pressley—neither gaining significant traction—far behind; Pressley has not entered the race despite lingering name recognition. Markey reinforced his position in an August 28 debate, touting endorsements from Elizabeth Warren and a progressive record, while his $6 million cash-on-hand dwarfs Moulton's $1.5 million. Moulton's moderate critique of party extremes appeals narrowly, but incumbency advantages and base rates of primary reelection solidify the pricing.

Experimental AI-generated summary referencing Polymarket data · Updated
This market will resolve according to the winner of the Democratic Primary for United States Senator from Massachusetts. 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.Incumbent Senator Ed Markey's strong polling lead and fundraising dominance drive trader consensus favoring him heavily in the September 3 Massachusetts Democratic Senate primary. The latest Emerson College poll (August 23-26) shows Markey at 48% support versus U.S. Rep. Seth Moulton's 17%, with Boston City Councilor Alexander Rikleen and U.S. Rep. Ayanna Pressley—neither gaining significant traction—far behind; Pressley has not entered the race despite lingering name recognition. Markey reinforced his position in an August 28 debate, touting endorsements from Elizabeth Warren and a progressive record, while his $6 million cash-on-hand dwarfs Moulton's $1.5 million. Moulton's moderate critique of party extremes appeals narrowly, but incumbency advantages and base rates of primary reelection solidify the pricing.

Incumbent Senator Ed Markey's strong polling lead and fundraising dominance drive trader consensus favoring him heavily in the September 3 Massachusetts Democratic Senate primary. The latest Emerson College poll (August 23-26) shows Markey at 48% support versus U.S. Rep. Seth Moulton's 17%, with Boston City Councilor Alexander Rikleen and U.S. Rep. Ayanna Pressley—neither gaining significant traction—far behind; Pressley has not entered the race despite lingering name recognition. Markey reinforced his position in an August 28 debate, touting endorsements from Elizabeth Warren and a progressive record, while his $6 million cash-on-hand dwarfs Moulton's $1.5 million. Moulton's moderate critique of party extremes appeals narrowly, but incumbency advantages and base rates of primary reelection solidify the pricing.

Experimental AI-generated summary referencing Polymarket data · Updated

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Frequently Asked Questions

"Massachusetts Democratic Senate Primary Winner" is a prediction market on Polymarket with 4 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Ed Markey" at 89%, followed by "Seth Moulton" at 10%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 89¢ implies that the market collectively assigns a 89% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Massachusetts Democratic Senate Primary Winner" is a newly created market on Polymarket, launched on Dec 2, 2025. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Massachusetts Democratic Senate Primary Winner," browse the 4 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Massachusetts Democratic Senate Primary Winner" is "Ed Markey" at 89%, meaning the market assigns a 89% chance to that outcome. The next closest outcome is "Seth Moulton" at 10%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Massachusetts Democratic Senate Primary Winner" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.