Methods of Constitutional Amendments or Revisions

The Constitution of the Philippines may be amended or revised through:

1. Constituent assembly - The Congress shall constitute itself into a constituent assembly and upon a vote three-fourths may amend or revise the constitution.

2. Constitutional Convention - The Congress, by a vote of two-thirds of all its members, shall call a constitutional convention or, by a majority vote of all its members, shall submit to to the electorate the question of calling such a convention.

3. Initiative - the people, through initiative upon petition of the required number of registered voters, shall directly propose the amendment.

In all cases, the amendment or revision shall only becomes valid upon ratification by the majority of the voters in a plebiscite called for that purpose.