Gordon Page, I-Owls Head, and Marc Ratner, D-Camden, vied for the open seat. Page sent a letter to the editor acknowledging Ratner's win, offering, "congratulations and best wishes to Marc Ratner on his election to the Knox County Commission."

District 3 comprises Camden, Hope, Isle au Haut, Matinicus Isle Plantation, North Haven, Owls Head, Rockport, Vinalhaven, the Unorganized Territories of Criehaven and Mussel Ridge Islands.