The 1987 Constitution provides that,
Section 1. Any amendment to, or revision of, this Constitution may be proposed by: (1) The Congress, upon a vote of three-fourths of all its Members;
But how many Members of the Congress are there and how many would constitutes "three fourths of all its Members?" The answer to this question used to be uncontroversial at 195 or so, but a recent SCoRP Decision (Banat v. Comelec) seems to have JUDICIALLY LEGISLATED an increase in the membership of the House to 275 (220 District and 55 Party List representatives). Given that there are 23 incumbent Senators, the total membership of the Congress is 298. Rounded up, three fourths of 298 is 224.I don't think there's ever even been that many Members of the Lower House together in one place, anywhere, any time.