Markey Defends Senate Seat in Massachusetts Primary, Beating Moulton by Nearly 30 Points
Incumbent U.S. Senator Ed Markey won the Massachusetts Democratic primary for the U.S. Senate on September 1, 2026, defeating Representative Seth Moulton with 64.7% of the vote to Moulton’s 35.0%. The Associated Press called the race shortly after polls closed, with Markey leading by nearly 50 points. The victory secures Markey’s position as the Democratic nominee for the general election against Republican John Deaton, who won the uncontested Republican primary. The result marks a significant win for the 80-year-old incumbent, who had faced a generational challenge from the younger Moulton.
Key points
- Ed Markey received 580,628 votes (64.7%) compared to Seth Moulton’s 314,198 votes (35.0%) in the Massachusetts Democratic Senate primary.
- The Associated Press projected Markey as the winner approximately 30 minutes after polls closed on September 1, 2026.
- Republican candidate John Deaton won the uncontested Republican primary for the same Senate seat.
- Markey, age 80, is one of only two current senators whose tenures date back to the Gerald Ford presidency.
- The primary took place during the 2026 midterm elections, with Massachusetts voters also electing state House and Senate representatives.
Background
Prior to the September 1 primary, polling showed Markey widening his lead over Moulton, with a late August Suffolk University/Boston Globe survey showing a 52.2% to 38% margin. Earlier coverage highlighted a Democratic internal debate between progressive and moderate factions, with Markey receiving endorsements from figures like Bernie Sanders and AOC, while Moulton emphasized generational renewal. The primary was also noted for overlapping with Boston’s annual 'Moving Day' and featured debates on transgender rights and immigration.
How outlets are covering it
NBC News and The Atlantic both emphasized the decisive nature of Markey’s victory, with The Atlantic framing it as a rejection of the 'old guard' narrative that had led other senior Democrats to retire. NBC News provided detailed township-level breakdowns, showing consistent support for Markey across various districts. WBUR focused on the broader context of Massachusetts state and federal primaries. All sources agree on the final vote counts and the uncontested nature of the Republican primary, but The Atlantic placed greater emphasis on the generational aspect of the race, while NBC News focused on the electoral data and projections.
Why it matters
Markey’s victory ensures a strong Democratic candidate for the general election in a deep-blue state, potentially influencing the balance of power in the U.S. Senate. The result also signals that older, established Democrats can still win primaries in Massachusetts, challenging the narrative that younger candidates are universally preferred. The outcome may have implications for the 2028 Democratic presidential primary, as Markey’s continued presence in the Senate could affect party dynamics.
What to watch
Markey will now face John Deaton in the November 2026 general election for the U.S. Senate. The result of this primary will likely influence the broader Democratic strategy for the 2026 midterms and potentially the 2028 presidential cycle. Further analysis of the primary results may provide insights into voter preferences on issues like transgender rights and immigration in Massachusetts.
- Markey projected to defeat Moulton: Mass. primary live updates The Boston Globe
- Massachusetts Senate Primary Election 2026 Live Results: Ed Markey, Seth Moulton and More NBC News
- The Guard That Won’t Be Changing The Atlantic
- Results: Massachusetts state House and Senate primaries WBUR
- Sen. Ed Markey, 80, wins Democratic primary over opponent who called for generational change The Times of Israel
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