G.R. No. 246816, September 15, 2020
ANGKLA: ANG PARTIDO NG MGA PILIPINONG MARINO, INC. (ANGKLA), AND SERBISYO SA BAYAN PARTY (SBP), PETITIONERS, VS. COMMISSION ON ELECTIONS, ET AL., RESPONDENTS. AKSYON MAGSASAKA – TINIG PARTIDO NG MASA (AKMA-PTM), PETITIONER-IN-INTERVENTION.

FACTS

Petitioners ANGKLA, SBP, and AKMA-PTM failed to secure a seat in the May 2019 party-list elections. They challenged the seat allocation formula established in the case of Barangay Association for National Advancement and Transparency (BANAT) v. Commission on Elections. The party-list system, a constitutional innovation, aims to diversify House representation by providing a platform for marginalized sectors and groups outside traditional politics. The allocation mechanism is governed by Republic Act No. 7941 (The Party-List System Act).
The legal framework for seat allocation has evolved through jurisprudence. Initially, Veterans Federation Party v. COMELEC set parameters including a 2% vote threshold for a guaranteed seat and a three-seat limit per party. This was revised in BANAT, which declared the 2% threshold for additional seats unconstitutional and abandoned the “First Party Rule.” BANAT instituted a three-tier system: parties with at least 2% of votes get one guaranteed seat; then, additional seats are distributed proportionally based on ranking until all available seats are filled, subject to the three-seat cap.

ISSUE

Whether the BANAT formula for allocating party-list seats should be abandoned for being inconsistent with the Constitution and RA 7941.

RULING

The petitions were dismissed. However, in a separate opinion, Justice Caguioa concurred with the dismissal but called for the abandonment of the BANAT formula. He argued that the formula fails to fully realize the constitutional intent of the party-list system. The core legal flaw identified is that the retained 2% threshold for the first guaranteed seat, combined with the three-seat cap, creates a mathematical impossibility of filling all available party-list seats when they exceed 50. This results in a systematic under-representation, defeating the constitutional mandate for party-list representatives to constitute twenty percent of the House.
The opinion contends that the BANAT formula, while an improvement, still imposes an artificial barrier. It prevents the full allocation of the constitutionally reserved seats, thereby stifling the breadth of representation the system was designed to achieve. The spirit of the Constitution and RA 7941 is to maximize sectoral participation and ensure that the 20% allocation is fully utilized. The persistence of vacant seats under the BANAT computation means the system is not operating as a truly proportional representation mechanism, undermining its purpose of empowering marginalized and underrepresented groups.