Seth Moulton

Rule Changes

Lost Senate primary, now supports Markey

Boston Mayor Michelle Wu turned a policy defeat into a personal political fight. She backed primary challengers against two state senators who blocked her property tax plan in January. The results: one lost decisively, the other is locked in a razor-thin race.

Updated 3 hours ago

Rule Changes

Lost primary, endorsed Markey

Ed Markey, 80, won Massachusetts' Democratic Senate primary on September 1, defeating Rep. Seth Moulton, 47, who built his campaign on the argument that the party needed younger leaders. The Associated Press called the race about 30 minutes after polls closed, with Markey taking roughly 70% of the vote.

Updated 5 hours ago

Rule Changes

Lost Senate primary to Markey; leaves Congress in January 2027

Dan Koh, a former Biden White House aide, won Massachusetts' 6th Congressional District Democratic primary on September 1, 2026, beating five rivals for the open North Shore seat. The seat opened when incumbent Seth Moulton gave it up to challenge Sen. Ed Markey, a race he lost the same night.

Updated Yesterday