Velis defeated Republican Dan Allie, a member of the Westfield City Council, 53 percent to 47 percent in a special election Tuesday for a state House seat representing Westfield.
Voters are choosing between Republican Dan Allie and Democrat John Velis.
The winner of Tuesday’s special election for state representative will have to defend the seat in November’s general election.
Several special elections took place in Massachusetts on Tuesday, including in the city of Westfield.
A special election for Westfield’s vacant seat in the Massachusetts House was scheduled Monday, nearly two months after Republican Don Humason moved to the state senate.