Representative Jeff Turco won his Democratic party primary, virtually assuring his re-election next month to a third two-year term, with a sweeping victory over progressive challenger Lee Meyer.

Mr Turco won by a margin of 63 percent to 37 percent. In a legislative district covering Winthrop and parts of Revere, Mr Turco’s victory was dominating in most precincts. A few relative exceptions occurred in Winthrop, especially the town’s third precinct, where Mr Turco appeared to have won by 13 votes out of 419 cast.

Mr Turco declined to comment, while Mr Meyer said his support reflected concern over matters of health care, cost of living and the need to audit the state legislature. “To all the people who volunteered, supported and voted for this campaign, I’m so grateful,” he said.

In other races before Winthrop voters on Tuesday, Senator Edward Markey defeated Representative Seth Moulton on his path to a third six-year term in the US Senate, and the Suffolk district attorney, Kevin Hayden, held an early lead over two challengers in his pursuit of a second full term.

Baylis trailing

Also among the Democratic party primary races, Diann Baylis was trailing incumbent Terrence Kennedy in their bid for a seat on the Governor’s Council, and US Representative Katherine Clark of Revere, one of the top-ranking Democrats in the US Congress, easily turned aside two party challengers.

And on the Republican ballot, Mike Minogue defeated Brian Shortsleeve – an outspoken ally of Winthrop residents opposed to compliance with the 3A housing law – in their contest to be their party’s nominee to challenge the re-election of Governor Maura Healey, in a race the incumbent Democrat is widely expected to win.

Representative Turco first won his seat in a special election in 2021, and was re-elected in two biannual elections since then without opposition. Mr Meyer ran against him, encouraged by progressives who reject Mr Turco’s alignment with conservative positions and candidates, including his early support of Donald Trump.

Sitting state lawmakers overwhelmingly win their re-election races, and Mr Turco enjoyed benefits against Mr Meyer, a paramedic, that included a $350,000 campaign account and endorsements by fellow Democratic party incumbents with little regard to political approaches.

Incumbents formidable

Mr Markey was challenged by Mr Moulton, a six-term member of the US House of Representative from Salem, who stoked concerns that the 80-year-old incumbent was too old for the job. Mr Markey has cultivated decades of personal support across Massachusetts to turn aside Mr Moulton, a US Marine Corps veteran who gave up his seat in Congress to give Mr Markey his second straight primary contest.

Mr Hayden, in seeking a second four-year term, drew two challengers after his office led a grand jury to bring a manslaughter charge against a Boston police officer who fatally shot a carjacking suspect in Roxbury. The challengers were his predecessor as Suffolk district attorney, Rachael Rollins, and a former prosecutor in their office, Linda Champion.

Ms Baylis said she ran against Mr Kennedy in large part because she felt that a seat on the Governor’s Council would help ensure that the body – which gives approval for judicial appointments among other positions – would increase pressure on the judiciary to give immigrant children fairer treatment in deportation processes.

Representative Clark, in seeking a seventh full term in the US House of Representatives, was challenged in the Democratic primary by Jonathan Paz, a former Waltham city councilor, and Tarik Samman, a union organizer.

All the Democrats who won their contested primary races Tuesday are largely expected to win at the general election stage on November 3.