"SEC. 13. Authorized Expenses of Candidates and Political Parties. — The aggregate amount that a candidate or registered political party may spend for election campaign shall be as follows:
(a) For candidates — Ten pesos (P10.00) for President and Vice-President; and for other candidates, Three pesos (P3.00) for every voter currently registered in the constituency where he filed his certificate of candidacy: Provided, That, a candidate without any political party and without support from any political party may be allowed to spend Five pesos (P5.00) for every such voter; (...)."
(Republic Act No. 7166, 1991)
Republic Act No. 7166 (1991)