Massachusetts Senate Race Odds 2026
Prices as of 2026-11-03 22:50 UTC.
Ed MarkeyD leads at 99% across 4 venues: Kalshi 98%, Polymarket US 98%, PredictIt 99%, Polymarket 99%. John DeatonR is at 1%.
Final prices before polls closed
Frozen at 2026-11-03 22:47 UTC. The result is entered when the race is called and scored on the results ledger.
- Kalshi Ed Markey 98%
- Polymarket US Ed Markey 98%
- PredictIt Ed Markey 99%
- Polymarket Ed Markey 99%
Candidates and prices
| Candidate | Kalshi | Polymarket US | PredictIt | Polymarket | Consensus |
|---|---|---|---|---|---|
| Ed MarkeyD incumbent Senator since 2013; beat Seth Moulton 64.7%-35.0% in the September 1 primary | 98% bid 98¢ · ask 98¢ · OI $155k | 98% ask 99¢ | 99% | 99% vol $61k | 99% |
| John DeatonR Republican nominee | 2% bid 2¢ · ask 2¢ · OI $697k | 1% ask 2¢ | 1% buy 3¢ | <1% vol $29k | 1% |
Where to trade this race
Every book we know that takes this race, with the price it shows for Ed Markey. The brokers trade Kalshi's contract at Kalshi's price. Partner books pay us a referral fee; the order is paying books first, which never changes a price.
Each book checks age and location at sign-up. How the sites compare.
The race
The forecasters' consensus rating is Solid D, favouring the Democrat. The markets' consensus has Ed MarkeyD at 99%. What a price means.
How the Kalshi market resolves
If a representative of the Democratic party is sworn in as a Senator of Massachusetts for the term beginning in 2027, then the market resolves to Yes.
Related races
- Massachusetts Governor: Maura HealeyD at 98%
- Iowa Senate: Josh TurekD at 50%
- Kansas Senate: Adam HamiltonD at 66%
- Alaska Senate: Mary PeltolaD at 69%
- Maine Senate: Troy JacksonD at 69%
- South Carolina Senate: Darline GrahamR at 70%