What to know about the US primary election in Massachusetts

Voters in the US state of Massachusetts head to the polls on Tuesday for a primary election featuring a closely watched United States Senate contest between Democratic incumbent Senator Ed Markey and US Representative Seth Moulton.The race is the latest contest that pits the Democratic Party’s progressive and moderate wings against each other. But in a twist, Moulton, the challenger, is part of the moderate New Democrat Coalition, while Markey, the longtime progressive incumbent, is fighting to hold on to his seat.Recommended Stories list of 2 itemslist 1 of 2US Postal Service says mail-in ballot restrictions now in effectlist 2 of 2US Supreme Court sides with Trump administration on mail votingend of listVoters will also decide competitive Democratic primaries in the 6th and 8th Congressional Districts, as well as races for the state’s governor, state legislature, and district attorney.What time do polls open and close in Massachusetts?The Massachusetts primary is Tuesday, September 1, 2026. Polls open at 7am ET (11:00 GMT) and close at 8pm ET (midnight GMT).What are the key races in the Massachusetts primary?In the 6th District, voters will choose a Democratic nominee to succeed ...