Political party strength in Puerto Rico

The following table indicates the party of elected officials in the United States insular area of Puerto Rico:
*Governor

The table also indicates the historical party composition in the:
*Territorial Senate
*Territorial House of Representatives
*Territory delegation to the U.S. House of Representatives

The parties are as follows: Democratic (D), Puerto Rican Independence (PIP), New Progressive (PNP), Popular Democratic (PPD), and Republican.

For a particular year, the noted partisan composition is that which either took office during that year or which maintained the office throughout the entire year. Only changes made outside of regularly scheduled elections are noted as affecting the partisan composition during a particular year. Shading is determined by the final result of any mid-cycle changes in partisan affiliation.