Massachusetts Holds September 1 Primary; Markey Beats Moulton for Senate Nomination

Massachusetts held its state primary election on Tuesday, September 1, 2026, with voters selecting party nominees for U.S. Senate, U.S. House, governor, and other statewide and legislative offices ahead of the November 3 general election. Incumbent Democratic Sen. Ed Markey, seeking a third term, faced U.S. Rep. Seth Moulton in a closely watched primary contest. Gov. Maura Healey, a Democrat, sought a second term. Markey defeated Moulton in the Democratic Senate primary and will face Republican nominee John Deaton in November. Healey secured the Democratic gubernatorial nomination; on the Republican side, Mike Minogue defeated Brian Shortsleeve for the nomination and will face Healey in the general election. The Suffolk County district attorney's Democratic primary included incumbent Kevin Hayden, Rachael Rollins, and Linda Champion as candidates, though the outcome of that race was not confirmed across sources. As of the reporting period, general election matchups for Massachusetts Senate (Markey vs. Deaton) and governor (Healey vs. Minogue) were set for November 3, 2026. Detailed vote totals and margins for the Senate and gubernatorial primaries were not specified in available reporting. The result of the Suffolk County DA primary remains unresolved based on the supplied sources. Separate primary contests reported around the same period—including in Michigan, Florida, Kansas, and Colorado—were part of the broader 2026 primary season but are distinct, unrelated races.