Provincetown is represented in the Massachusetts House of Representatives as a part of the Fourth Barnstable District, which includes (with the exception of Brewster) all the towns east and north of Harwich on the Cape. The seat is held by Democrat Sarah Peake, a former Provincetown selectman. The town is represented in the Massachusetts Senate as a part of the Cape and Islands District, which includes all of Cape Cod, Martha's Vineyard and Nantucket except the towns of Bourne, Falmouth, Sandwich and a portion of Barnstable. The Senate seat is held by Democrat Julian Cyr. Provincetown is patrolled by its own Police Department as well as the Second (Yarmouth) Barracks of Troop D of the Massachusetts State Police.