Newly-elected state representative Sean Garballey (D-Arlington) makes a speech from the House floor Thursday as Governor Deval Patrick and House Speaker Sal DiMasi (D-Boston) look on. Rep. Garballey was recently elected to Jim Marzilli’s former seat, which Marzilli left after he was elected to the state senate. According to published reports, at 23, Rep. Garballey is the youngest lawmaker in the state legislature. Courtesy photo.