Jim Anderton’s Progressive Party (formed in 2002 as the Progressive Party and renamed after its founder in 2005) was a New Zealand political party generally somewhat to the left of its ally the Labour Party.The party was established when Anderton and his supporters left the Alliance party. The party held at least one seat in Parliament from 2002 to 2011 following its leader Jim Anderton’s victories in the electorate of Wigram.