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POLITICS · AUG 17, 2026

Ed Markey Leads Seth Moulton in Massachusetts Senate Primary

Senator Ed Markey holds a significant lead over Representative Seth Moulton in recent polls ahead of the September 1 Democratic primary for the Massachusetts U.S. Senate seat.

Incumbent Ed Markey holds a substantial lead over challenger Representative Seth Moulton in the Massachusetts U.S. Senate Democratic primary. A UMass Amherst/WCVB poll conducted between August 5 and 12 shows Markey with 60% support compared to 32% for Moulton, a 28-point gap. A separate Suffolk University/Globe poll also favors Markey with 52% to 38%. This represents a significant increase from a July University of New Hampshire poll that showed Markey leading by only 6%.

Markey, who pledged in July that this would be his final term, maintains an 82% job approval rating and is favored by voters for his progressive ideology and experience. Moulton has centered his campaign on the need for a new generation of leadership, advocating for congressional age and term limits. While Markey leads among primary voters, Moulton leads among independent voters 53% to 30%.

Moulton has dismissed the UMass Amherst/WCVB poll as inaccurate and criticized Markey for accepting $62,000 from the Democratic Senatorial Campaign Committee and skipping candidate forums. In a look toward the general election, Markey leads Republican candidate John Deaton 51% to 30%, while Moulton leads Deaton 49% to 25%.

The candidates are scheduled for a final televised debate on Thursday, August 21, hosted by WCVB NewsCenter 5, WBUR, and The Boston Globe. Early voting begins August 22, with the primary election set for September 1.


Reported across 8 outlets
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Ed MarkeySeth Moulton

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