Only one, the Bangsamoro Autonomous Region in Muslim Mindanao, has an elected government and parliament to which the Congress of the Philippines has delegated certain powers and responsibilities.

The names of Calabarzon, Mimaropa, and Soccsksargen are acronyms signifying their component provinces and cities; and are usually capitalized in official government documents.

No plebiscites have been conducted so far to democratically confirm the creation, abolition or alteration of the boundaries of regular administrative regions, as the Constitution does not mandate it.

[39] As far as the judiciary is concerned, specifically the first and second level courts, the country is divided into judicial regions as provided by Batas Pambansa Bilang 129.

This was the only time the national legislature was represented via regions; in a 1984 plebiscite, voters approved a constitutional amendment that reverted to representation per province and city.