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Politics·Primaries

MA-06 Democratic Primary Winner

Market icon
Politics·Primaries

MA-06 Democratic Primary Winner

Dan Koh 74%

Seth Moulton 11.5%

Jamie Zahlaway Belsito 6.3%

Tram Nguyen 5.0%

Polymarket
NEW

Dan Koh 74%

Seth Moulton 11.5%

Jamie Zahlaway Belsito 6.3%

Tram Nguyen 5.0%

Polymarket
NEW

Dan Koh

$3,508 Vol.

74%

Seth Moulton

$0 Vol.

11%

Jamie Zahlaway Belsito

$0 Vol.

6%

Tram Nguyen

$0 Vol.

5%

Diann Slavit Baylis

$0 Vol.

4%

Dominick Pangallo

$0 Vol.

3%

John Beccia

$0 Vol.

2%

Rick Jakious

$0 Vol.

2%

Rachel Creemers

$0 Vol.

2%

Mariah Lancaster

$0 Vol.

8%

Beth Andres-Beck

$1,341 Vol.

1%

Kevin Larivee

$1,228 Vol.

7%

This market will resolve according to the candidate who wins the nomination for the Democratic Party to contest the MA-06 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Democratic primary will take place on September 15, 2026. 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.The open Massachusetts 6th Congressional District Democratic primary, vacated by Rep. Seth Moulton for his U.S. Senate bid against Sen. Ed Markey, sees former Biden aide Dan Koh commanding trader consensus at 74% implied probability, propelled by superior fundraising exceeding $2 million without PACs, endorsements from Kamala Harris, Marty Walsh, Pete Buttigieg, and recent labor unions like Merrimack Valley Building Trades, plus first-to-qualify ballot access on March 27 with over 2,000 signatures across all 39 district towns. Moulton's 12% share stems from incumbency name recognition despite his withdrawal, while state Rep. Tram Nguyen, ex-Rep. Jamie Zahlaway Belsito, and others trail amid early March forums debating health care, immigration, and foreign policy. No public polls exist; the May state convention and September 1 primary loom as pivotal.

The open Massachusetts 6th Congressional District Democratic primary, vacated by Rep. Seth Moulton for his U.S. Senate bid against Sen. Ed Markey, sees former Biden aide Dan Koh commanding trader consensus at 74% implied probability, propelled by superior fundraising exceeding $2 million without PACs, endorsements from Kamala Harris, Marty Walsh, Pete Buttigieg, and recent labor unions like Merrimack Valley Building Trades, plus first-to-qualify ballot access on March 27 with over 2,000 signatures across all 39 district towns. Moulton's 12% share stems from incumbency name recognition despite his withdrawal, while state Rep. Tram Nguyen, ex-Rep. Jamie Zahlaway Belsito, and others trail amid early March forums debating health care, immigration, and foreign policy. No public polls exist; the May state convention and September 1 primary loom as pivotal.

Experimental AI-generated summary referencing Polymarket data · Updated
This market will resolve according to the candidate who wins the nomination for the Democratic Party to contest the MA-06 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Democratic primary will take place on September 15, 2026. 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.The open Massachusetts 6th Congressional District Democratic primary, vacated by Rep. Seth Moulton for his U.S. Senate bid against Sen. Ed Markey, sees former Biden aide Dan Koh commanding trader consensus at 74% implied probability, propelled by superior fundraising exceeding $2 million without PACs, endorsements from Kamala Harris, Marty Walsh, Pete Buttigieg, and recent labor unions like Merrimack Valley Building Trades, plus first-to-qualify ballot access on March 27 with over 2,000 signatures across all 39 district towns. Moulton's 12% share stems from incumbency name recognition despite his withdrawal, while state Rep. Tram Nguyen, ex-Rep. Jamie Zahlaway Belsito, and others trail amid early March forums debating health care, immigration, and foreign policy. No public polls exist; the May state convention and September 1 primary loom as pivotal.

The open Massachusetts 6th Congressional District Democratic primary, vacated by Rep. Seth Moulton for his U.S. Senate bid against Sen. Ed Markey, sees former Biden aide Dan Koh commanding trader consensus at 74% implied probability, propelled by superior fundraising exceeding $2 million without PACs, endorsements from Kamala Harris, Marty Walsh, Pete Buttigieg, and recent labor unions like Merrimack Valley Building Trades, plus first-to-qualify ballot access on March 27 with over 2,000 signatures across all 39 district towns. Moulton's 12% share stems from incumbency name recognition despite his withdrawal, while state Rep. Tram Nguyen, ex-Rep. Jamie Zahlaway Belsito, and others trail amid early March forums debating health care, immigration, and foreign policy. No public polls exist; the May state convention and September 1 primary loom as pivotal.

Experimental AI-generated summary referencing Polymarket data · Updated

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Frequently Asked Questions

"MA-06 Democratic Primary Winner" is a prediction market on Polymarket with 12 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Dan Koh" at 74%, followed by "Seth Moulton" at 11%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 74¢ implies that the market collectively assigns a 74% 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.

"MA-06 Democratic Primary Winner" is a newly created market on Polymarket, launched on Nov 25, 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 "MA-06 Democratic Primary Winner," browse the 12 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 "MA-06 Democratic Primary Winner" is "Dan Koh" at 74%, meaning the market assigns a 74% chance to that outcome. The next closest outcome is "Seth Moulton" at 11%. 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 "MA-06 Democratic 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.