A referendum on the status of the archipelago and island was held in Puerto Rico on 23 July 1967. Voters were given the choice between being a Commonwealth, statehood or independence. The majority of voters voted for Commonwealth status. This was the first of several referendums held to decide on the political status of Puerto Rico.
The major pro-statehood party, the Partido Estadista Republicano, boycotted the referendum. As a result of its stance, several dissidents left the party to form the New Progressive Party.
Fetching the article from Wikipedia…
Text from the Wikipedia article “Puerto Rican status referendum, 1967”, available under CC BY-SA 4.0.