Puerto Rico has a 'first past the post' electoral system, in which a voter can vote by party, by candidate or both.
This list sorts political parties either alphabetically or by date of founding.
As of 2020, Puerto Rico has five registered electoral parties: Centrism Conservatism Liberalism[3] Social democracy[4]Anti-corruption[5]Anti-colonialism[6] Democratic socialism[7][8]Puerto Rican independence[9] ConservatismAnti-corruption[10] The existing parties in Puerto Rico at the time of change of sovereignty in 1898 reinvented themselves into parties with by-laws, platforms and ideologies consistent with the new political reality brought about by the change of sovereignty.
[14] Bolivar Pagan states the following were the political parties in Puerto Rico during the years of Spanish sovereignty.
[a][15] A number of unregistered political parties and organizations exist in Puerto Rico outside of the electoral arena.