Omnibus Election Code
Section 250. Election contests for Batasang Pambansa, regional, provincial and city offices. - A sworn petition contesting the election of any Member of the Batasang Pambansa or any regional, provincial or city official shall be filed with the Commission by any candidate who has duly filed a certificate of candidacy and has been voted for the same office, within ten days after the proclamation of the results of the election.