Massachusetts Senate 2026 General Election
The Massachusetts Senate general election is on November 3, 2026. The model makes Democrat Ed Markey the heavy favorite at 98%, with Republican John Deaton at 2%. Ed Markey is the incumbent, leads the field in reported fundraising, and has the most tracked endorsements. Public polling is available for this race and feeds the forecast alongside fundraising, endorsements, and historical results.
Current win probabilities
- Ed Markey (incumbent) — 98%
- John Deaton — 2%
Probabilities update daily from polls, fundraising, endorsements, and historical results.