Omnibus Election Code
Section 20 Proclamation of the President-elect and Vice-President-elect. - Upon the completion of the canvass of the votes by the Batasang Pambansa, the persons obtaining the highest number of votes for President and for Vice-President shall be declared elected; but in case two or more shall have an equal and the highest number of votes, one of them shall be chosen President or Vice-President, as the case may be, by a majority vote of all the Members of the Batasang Pambansa in session assembled.
In case there are certificates of canvass which have not been submitted to the Speaker of the Batasang Pambansa on account of missing election returns, a proclamation may be made if the missing certificates will not affect the results of the election.
In case the certificates of canvass which were not submitted on account of missing election returns will affect the results of the election, no proclamation shall be made. The Speaker shall immediately instruct the boards of canvassers concerned to obtain the missing election returns from the boards of election inspectors or, if the returns have been lost or destroyed upon prior authority from the Commission, to use any authentic copy of said election returns for the purpose of conducting the canvass, and thereafter issue the certificates of canvass. The certificates of canvass shall be immediately transmitted to the Speaker of the Batasang Pambansa.
Proclamation shall be made only upon submission of all certificates of canvass or when the missing certificates of canvass will not affect the results of the election.