Section 164Omnibus Election Code of the Philippines (Batas Pambansa Blg. 881), Sec. 164

Composition and appointment of board of election inspectors. - At least thirty days before the date when the voters list is to be prepare in accordance with this Code, in the case of a regular election or fifteen days before a special election, the Commission shall, directly or through its duly authorized representatives, constitute a board of election inspectors for each precinct to be composed of a chairman and a poll clerk who must be public school teachers, priority to be given to civil service eligibles, and two members, each representing the two accredited political parties. The appointment shall state the precinct to which they are assigned and the date of the appointment.