Seth Moulton, an Iraq war veteran and first-time candidate, swept to victory as a change agent for the Sixth Congressional District on Tuesday, denying Massachusetts Republicans their best hope of picking up a seat in the US House this year.
With 89 percent of precincts reporting, Moulton was beating Republican Richard R. Tisei, 55.4 percent to 40 percent. Tisei conceded the race around 9:40 p.m.
Moulton, 36, a Marine who won medals for valor in combat, presented a fresh face and untrammeled record to a populace hungry for change. He had already succeeded in ousting US Representative John F. Tierney — a nine-term incumbent damaged by his wife’s 2010 conviction on federal tax fraud charges — in the September primary.
“It feels great but it’s also humbling,” Moulton told the Globe as he arrived at his headquarters for his victory speech. “And I realize this is not about me. This is about an incredible team who came together who believed in making a difference in Washington and all the voters in the district who voted for that change.”
Moulton’s win dealt a second loss to Tisei, whose bid two years ago for the same seat fell short by less than 1 percentage point. This year, Tisei had been seen as a strong candidate to oust Tierney — before Moulton edged him aside in the primary.