The first election for the new municipality was held in 1970 and it was a large success for the Centre Party, both locally in Östersund and nationally due to its opposition towards centralisation. Having entered in 1966 with 4 seats it now possessed one fourth of the total number of seats (which was mainly due to support from the city, not the newly included rural areas). Block politics formation became prominent and the Centre Party became the leading party for the centre-right block, whilst the Social Democrats came to dominate the left block. The Social Democrats regained power in 1980 and has since governed Östersund Municipality until present day (excluding a brief period in the 1990s) supported by the communists (after 1991 known as the Left Party) and occasionally the Green Party. The Green Party has been in the municipal council since 1982.