Most of the elective positions in the Philippines are selected through the first-past-the-post system, The President and the Vice-president are directly elected in a first-past-the-post system for a term of 6 years which shall begin at noon the 30th day of June next following the election and shall end noon of the same date six years thereafter. The President is not eligible for any reelection. Meanwhile the election of members of the bicameral congress has a mixed system. For the upper house (Senate), 24 seats are elected in plurality at large voting system for a term of 6 years. Half of its members are elected every 3 years, they are limited to 2 terms. Meanwhile, members of the lower house (house of representatives) are elected in a mixed system. 80 % of the total 292 seats are directly elected through a single-member district constituency plurality system for a term of 3 years. Meanwhile 20% of the total seats are reserved for registered national, regional, and sectoral parties elected through proportional representation.
Resources :
LINK : Philippines: Kapulungan Ng Mga Kinatawan (House of Representatives)- Inter-Parliamentary Union
LINK : Philippines: Senado (Senate)- Inter-Parliamentary Union