Hartford city councilor Julio Concepcion won a special election June 4 to fill the vacant 4th State House District seat.
The Democrat will serve out the remaining seven months of former state Rep. Angel Arce's term.
The three-term Democratic incumbent resigned the seat, which covers parts of Hartford's South End and downtown, in April.
Concepcion drew 65% of the vote, defeating petitioning candidate Jessica Inacio, Republican Bryan Nelson, and write-in candidate Mary Sanders.
Turnout was low for the special election, with only 6% of the district's registered voters casting ballots.
Concepcion said he will contest the seat again this fall in the general election.
State law mandates that a special election must be held if a General Assembly member resigns 49 days or more before a general election.
Democrats now control 80 of the state House's 151 seats.
The state Senate is split 18-18 between Democrats and Republicans.