Certified results from last Tuesday’s state primary show Lori Trahan leading Dan Koh by 122 votes in the 3rd Congressional District race, more than doubling earlier estimates.
Secretary of State William Galvin released the certified results Sunday evening. They show Trahan of Westford received 18,527 votes, while Koh of Andover received 18,405.
The results widen the margin between the two top vote-getters in the Democratic primary to succeed Congresswoman Niki Tsongas, D-Lowell, who is retiring after a decade in office. In all, there were 10 candidates in the field. The winner of the primary will face Republican Rick Green of Pepperell and unaffiliated candidate Mike Mullen of Maynard in November.
Unofficial results last week showed Trahan, former chief of staff to former Congressman Marty Meehan, edging Koh, former chief of staff to Boston Mayor Marty Walsh by a razor-thin majority of 52 votes – well within the 0.5 percent margin to call for a recount.
The Koh campaign filed for a recount Friday. Both campaigns had collected signatures just in case. The recount could begin as soon as Thursday, and must be completed by Monday, Sept. 17, according to state election officials.
At a press conference Saturday, surrounded by some of the women she defeated in the 3rd District primary, Trahan said her expanding lead “gives me even more confidence.” Trahan has repeatedly declared victory following the Democratic primary, even with only unofficial totals.
In a press release from her campaign Sunday, Trahan said she was “energized and ready for what will be a hard-fought battle against a Republican with deep pockets and strong ties to Trump.
“My campaign is prepared to go forward to keep this seat Democratic and continue the Tsongas legacy of serving the working families of this district,” she said.
Follow Lisa Kashinsky on Twitter @lisakashinsky.