Omnibus Election Code
Section 16 Counting of votes for President and Vice-President by the Batasang Pambansa. - The certificates of canvass, duly certified by the board of canvassers of each province, city or district in Metropolitan Manila shall be transmitted to the Speaker of the Batasang Pambansa, who shall, not later than thirty days after the day of the election, convene the Batasang Pambansa in session and in its presence open all the certificates of canvass, and the votes shall then be counted.