Massachusetts — Senate

John Deaton (R) vs Edward J. Markey (D).

Called by the AP: Edward Markey (D). Edward Markey (D) 65.5%; John Deaton (R) 29.8%. Source: The Associated Press.

Cook: Solid D. Public polls: 8.

Atlas pre-election model — built only from data frozen on October 29, 2026; first published November 3 after polls closed, so it is a test of the method, not a prediction. Republican chance in that model: 0%.