A friend of one of my kids is from Puerto Rico.
In 1967, the Legislative Assembly tested political interests of the Puerto Rican people by passing a local Plebiscite Act that allowed a vote on the status of Puerto Rico. This constituted the first plebiscite by the Legislature for a choice on three status options. Following the plebiscite, efforts in the 1970s to enact legislation to address the status issue died in congressional committees. Subsequent locally-authorized plebiscites in 1993 (in which the Congress played a more substantial role), commonwealth status did not win a plurality.
A subsequent plebiscite was organized by the Puerto Rican government in 1993. The current political status (status quo) failed to receive majority support, receiving 48.6% of voter support. U.S. Congress played a more substantial role in the 1993 plebiscite than it did in the 1967 plebiscite. However, there was no formal commitment on the part of the U.S. Government to honor the results. In the end, Commonwealth status was again upheld in the 1993 plebiscite.
In the last locally-organized plebiscite held in Puerto Rico (1998), the current status quo (Commonwealth status) received less than one tenth of one percent (0.1%) of the total vote. The option of independence received 2.5%, "none of the above" received 50.3% and statehood received 46.7%.