Republican Steve Aylward of Watertown announced he has filed signatures to run for the Second Suffolk and Middlesex state senate seat, and he will challenge incumbent Will Brownsberger, a Democrat from Belmont.
Aylward won the race for Repubican State Senate Committeeman in March, and he serves as chairman of the Watertown Republican Town Committee. He also is a former School Committee member.
Aylward is the second person to officially announce a run for the state senate district that includes Watertown, Belmont and parts of Boson. Incumbent Brownsberger will run again.
Bob McCarthy of Watertown, who was one of four candidates to run in the special election to fill the seat, considered running but said this week he will not run.
The speical election was called after Steven Tolman left the seat to become president of the AFL-CIO of Massachusetts.