He won a special election to succeed Martha M. Walz , unopposed in the June 25 general election after winning the May 28 primary .
He is a resident of Back Bay , Boston , a member of the Democratic Party .
resident won a special election to succeed Martha M. Walz , unopposed in the June 25 general election after winning the May 28 primary .
He is a resident of Back Bay , Boston , a member of the Democratic Party .