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Massachusetts Primary Election Results: Live Maps for Key Races
The winner is favored in November as Democrats decide a race shaped by generational change and a crowded set of contested primaries.
On Tuesday, September 1, 2026, Massachusetts voters are casting ballots in the primary election to choose candidates for U.S. Senate, governor, and various local offices across the state.
Incumbent Senator Ed Markey, 80, faces a challenge from 47-year-old Congressman Seth Moulton, who has centered his campaign on 'generational change' and the need for new leadership in the Senate.
Several House incumbents face primary challengers running to their left, while six Democrats vie for the 6th Congressional District seat vacated by Moulton in a competitive race.
In the Republican primary for governor, businessman Mike Minogue and former MBTA chief Brian Shortsleeve compete, while the Democratic primary winner remains typically favored for the general election.
These results will determine the ballot for the November general election, for which the voter registration deadline is Saturday, October 24, 2026.
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Bloomberg Daybreak: US Edition report Massachusetts primary results as Sen. Ed Markey defeats Seth Moulton and Dan Koh wins the MA-6 Democratic nod, with Markey set to face John Deaton