Incumbent Ed Markey holds a strong lead in the Massachusetts Democratic Senate primary due to his established party support and recent performance at the state nominating convention, where he secured 73 percent of delegate votes against challenger Seth Moulton. Polling averages show Markey ahead by double digits, reflecting his incumbency advantage in a state where Democratic voters have historically favored continuity. Moulton's campaign focuses on generational turnover and has drawn some backing but trails significantly in both convention results and surveys. Minor candidates including Alexander Rikleen, who withdrew and endorsed Markey, and Ayanna Pressley, who also backed the incumbent, register negligible support. The September 1 primary date leaves limited time for shifts before voters decide.