Constitutional reform in the Philippines, also known as charter change (colloquially cha-cha), refers to the political and legal processes needed to amend the current 1987 Constitution of the Philippines. Under the common interpretation of the Constitution, amendments can be proposed by one of three methods: a People's Initiative, a Constituent Assembly or a Constitutional Convention. While no amendment to the 1987 Constitution has succeeded, there have been several high-profile attempts. None reached the ratification by referendum stage.