WATERTOWN — State Representative William Brownsberger won the Democratic primary in the special state Senate election Tuesday night for the Second Suffolk and Middlesex District, capturing 32.59 percent, or nearly one-third, of the vote for the seat Steven Tolman vacated.
With no Republicans in the race, Brownsberger is expected to be unopposed in the final election. However, other candidates could get on the Jan. 10 ballot by drawing at least 300 write-in votes in their party’s primary.
The district covers Watertown, Belmont, and parts of Cambridge, as well as precincts in Boston’s Allston-Brighton, Fenway, and Back Bay neighborhoods.
Brownsberger won with a large turnout in his hometown of Belmont, where nearly one-third of registered voters flocked to the polls and the candidate captured 68 percent of the votes. He also was the winner in Cambridge, winning over a third of votes cast there.
“I feel very fortunate that the people of this district gave me their votes,’’ Brownsberger said. “We have four good candidates, and the voters had a chance to take a good look at us. I’m glad the voters made the decision they made.’’
Tolman vacated his seat in October to head up the state’s AFL-CIO.
State Representative Jonathan Hecht followed with 25.62 percent of the vote. Retired firefighter and union leader Robert McCarthy finished third with 22.58 percent, while Brighton resident and attorney Timothy Schofield came in last with 18.97 percent.
McCarthy had won endorsements from Tolman and former US Representative Joseph P. Kennedy II.
Hecht claimed more than half the votes from his hometown, Watertown, where he received endorsements from the entire Watertown Town Council.
Schofield, who was endorsed by Boston Mayor Thomas M. Menino last week, received the most support in Boston with 2,061 votes – or nearly 64 percent in the city.