Recent polling has narrowed Ed Markey’s advantage in the Massachusetts Democratic Senate primary, with an Emerson College survey from early May showing him leading Seth Moulton 37 percent to 32 percent among likely voters and 29 percent undecided. Markey’s long incumbency since 1977 and established name recognition continue to anchor trader sentiment, while Moulton’s emphasis on generational change has gained traction among unenrolled voters and narrowed earlier double-digit margins seen in April surveys. Ayanna Pressley and other low-probability options remain sidelined absent any announced entry or surge in support. Upcoming campaign events through the September primary could further shift undecided voters and influence final positioning.