Senate
Who will win the Massachusetts general election for US Senate in 2026?
Massachusetts Senate General Election 2026 · Nov 3, 2026 · Trading open
Ed Markey99%
Seth Moulton11%$1.3K vol.
About this market
Traders price Ed Markey at 99% to win, ahead of Seth Moulton at 11%.
The market has $1.3K in volume across 31 trades; the most recent was on Oct 3, 2026.
Trading closes on Nov 19, 2026. The result is confirmed by Massachusetts Secretary of the Commonwealth Elections Division.
This race determines the outcome of the general election for US Senate in Massachusetts, shaping national legislative representation.
Rules and timeline
Each outcome is its own contract. A Yes contract pays $1 if its outcome happens and $0 if not; a No contract pays the reverse. Because the contracts trade separately, their chances don't have to add up to 100%.
- Ed MarkeyResolves Yes if Ed Markey wins the Massachusetts general election for US Senate in 2026.
- Seth MoultonResolves Yes if Seth Moulton wins the Massachusetts general election for US Senate in 2026.
- John DeatonResolves Yes if John Deaton wins the Massachusetts general election for US Senate in 2026.
Result confirmed by Massachusetts Secretary of the Commonwealth Elections Division.
- Trading opened
- Jan 23, 2026
- Trading closes
- Nov 19, 2026
- Expected result
- Nov 19, 2026
- Expected payout
- Nov 19, 2026
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Prices are the last trades on the ForecastEx exchange and can be delayed by about ten minutes. A chance is the price of a Yes contract, not a forecast by Aries. Event contracts involve risk, including the loss of the full amount paid. Information on this page is for informational purposes only and is not investment advice.