Recent polling from UMass Amherst and Suffolk University shows incumbent Senator Ed Markey expanding his lead to 52-60 percent among likely Democratic primary voters ahead of the September 1 contest, up sharply from earlier surveys that had the race closer. Markey benefits from broad support among progressives, liberals, women, and most age groups on the strength of his long record and issue positioning, while challenger Seth Moulton draws more backing from moderates and independents but trails by double digits. Ayanna Pressley has endorsed Markey rather than entering the Senate race, and minor candidate Alexander Rikleen remains marginal. Trader consensus reflects this consolidation in the final weeks, though a late surge in Moulton turnout or unexpected debate impact could still narrow the gap before ballots are cast.