The Constitutional Convention of 1971 minus 11 CON-CON delegates who were arrested during the proclamation of martial law, re-convenened and with nothing to do but to do what President Ferdinand Marcos wanted to be put to the proposed constitution. The regime tasked a plebiscite for the ratification of the proposed constitution to the people.
Marcos issued Presidential Decree No. 86 calling for the cancellation of the plebiscite and instituted barangays (citizens' assemblies) to ratify the new constitution. The barangays (citizens' assemblies) would institute the ratification by a referendum. The referendum of the proposed constitution happened from 10–15 January 1973. After the ratification, Proclamation No. 1102 on 17 January 1973, certified and proclaimed that the Constitution proposed by the Constitutional Convention of 1971 had been ratified by the Filipino people and thereby come into effect.