Guingona, Jr. vs. Gonzales

The rule on proportional representation of political parties in the election of members to the Commission on Appointments under Section 18, Article VI of the 1987 Constitution is mandatory and admits no discretion on the part of the majority party; fractional memberships cannot be unilaterally rounded up by the majority to increase its own representation at the expense of minority parties. A political party or coalition must have at least two duly elected senators for every seat it claims in the Commission on Appointments, and a party with only one elected senator is not constitutionally entitled to a seat.

The 11 May 1992 national elections produced a Senate composed of four political parties or coalitions: LDP (15 senators), NPC (5), Lakas-NUCD (3), and LP-PDP-LABAN (1). Under Section 18, Article VI of the 1987 Constitution, twelve senators are to be elected to the Commission on Appointments “on the basis of proportional representation from the political parties or organizations registered under the party list system represented therein.” Application of the agreed mathematical formula — (number of senators of a party ÷ total number of senators) × 12 seats — yielded fractional entitlements for every party, with LDP at 7.5, NPC at 2.5, Lakas-NUCD at 1.5, and LP-PDP-LABAN at 0.5 members. The manner in which the Senate would fill the twelve seats in light of these fractions became the subject of sharp controversy when the Senate convened for its organization meeting on 27 August 1992.

• Senate Composition: After the May 1992 elections, the Senate was composed of 24 senators distributed as follows: LDP — 15; NPC — 5; LAKAS-NUCD — 3; LP-PDP-LABAN — 1 (the last being Senator Teofisto Guingona, Jr., who was counted under LP-PDP-LABAN but was also a member of Lakas-NUCD as per party coalition arrangements).
• Proportional Entitlement: Using the agreed formula [(party senators ÷ total senators) × 12 seats], the proportional representation of each party in the 12 Senate seats on the Commission on Appointments was: LDP — 7.5; NPC — 2.5; LAKAS-NUCD — 1.5; LP-PDP-LABAN — 0.5. All parties acknowledged these fractional entitlements.
• Organization Meeting and Tolentino Compromise: At the 27 August 1992 organization meeting, LDP, exercising its numerical majority, nominated eight senators for the Commission, including respondent Romulo as the eighth, and also secured the election of respondent Tañada (LP-PDP-LABAN) as the twelfth member. Senators Guingona and Osmeña objected on the ground that the LDP was appropriating the fractional share of minority parties. To break the impasse, Senator Tolentino proposed a temporary compromise: 8 LDP, 2 NPC, 1 LP-PDP-LABAN, and 1 Lakas-NUCD — with the express understanding that the numbers would be adjusted if the Supreme Court later found any party to have an excess or deficiency. The compromise carried, and Romulo and Tañada assumed their seats.
• Petition: Petitioners Guingona and Lakas-NUCD, joined by intervenor NPC, sought to prohibit respondent Senate President Gonzales (ex-officio Chairman of the Commission) from recognizing the membership of Romulo and Tañada and to prohibit the two senators from sitting as members. Petitioners contended that the LDP majority had unilaterally rounded up its fractional membership by adding one half to 7.5, thereby increasing LDP’s representation to eight and correspondingly depriving either Lakas-NUCD or NPC of its full proportional share. Petitioners further argued that minority political parties had the right to combine their fractional representations to complete one seat and to decide among themselves who should fill it.

• Violation of Proportional Representation: Petitioners maintained that the election of Senator Romulo as the eighth LDP member and Senator Tañada as the sole LP-PDP-LABAN member contravened Section 18, Article VI, because LDP converted its fractional half-membership into a whole seat by taking the half-member share belonging to a minority party, thereby distorting the constitutionally mandated proportional representation.
• Right of Minority Parties to Consolidate Fractions: Petitioners argued that consistent with the Constitution, minority political parties in the Senate have the right to combine their fractional representation in the Commission on Appointments to complete one seat and to determine who among their ranks shall be additionally nominated and elected.
• Grave Abuse of Discretion: Petitioners asserted that the Senate majority, by sheer force of numbers, knowingly disregarded the mandatory rule on proportional representation, amounting to an act without or in excess of jurisdiction and a grave abuse of discretion correctible by prohibition and mandamus.

• Precedent and Entitlement of Single-Senator Party: Respondent Senator Tañada invoked the rulings in Tañada v. Cuenco (involving Senator Lorenzo Tañada) and the case of Senator Juan Ponce Enrile, arguing that as the sole elected senator of his party, LP-PDP-LABAN was entitled to a seat in the Commission; he contended that the physical impossibility of dividing a person necessitated rounding up the fractional membership to one full senator, and that such rounding up was consistent with the spirit of the Constitution and the principle of republicanism.
• Mandatory Twelve-Member Contingent: Respondents claimed that the Constitution makes it mandatory to elect twelve senators to the Commission on Appointments, and that filling the body with fewer than twelve senators would violate the constitutional design.
• Political Question: Respondents, at least implicitly, argued that the issue was a political question beyond judicial review — a contention dismissed by the Court in light of Coseteng v. Mitra, Jr., which established that the legality of filling up the membership of the Commission on Appointments is a justiciable issue.

• Proportional Representation: Whether the election of Senators Alberto Romulo and Wigberto Tañada as members of the Commission on Appointments complied with the proportional representation requirement of Section 18, Article VI of the 1987 Constitution.
• Entitlement of a Single-Senator Party: Whether a political party or coalition with only one elected senator is constitutionally entitled to a seat in the Commission on Appointments.
• Grave Abuse of Discretion: Whether the Senate majority, acting through the LDP, committed grave abuse of discretion in electing the respondent senators.
• Propriety of Prohibition: Whether a writ of prohibition should issue to enjoin the respondent senators from sitting and participating in the proceedings of the Commission on Appointments.

• Proportional Representation: The election of Senator Romulo as the eighth LDP member and Senator Tañada as LP-PDP-LABAN representative was invalid because it contravened the mandatory rule on proportional representation. The LDP majority converted its 7.5 fractional entitlement into eight whole seats by adding one half, thereby reducing the fractional membership of one minority party below its constitutionally guaranteed proportional share. This unilateral rounding up distorted the proportional balance, giving LDP more representation than it was entitled to and correspondingly diminishing the representation of the minority. The rule on proportional representation under Section 18 is mandatory and leaves no discretion to the majority party to disobey or disregard it; otherwise, the majority could by sheer numerical strength impose its will on the minority, defeating the constitutional design of maintaining a balance of power in the Commission on Appointments.
• Entitlement of a Single-Senator Party: A political party must have at least two duly elected senators to claim a seat in the Commission on Appointments; any number less than two entitles the party to no seat. The cases of Senators Lorenzo Tañada and Juan Ponce Enrile were distinguished: in Senator Lorenzo Tañada’s time, he alone comprised the opposition, and had there been another minority senator, the issue would have arisen; Senator Enrile’s opposition party had two elected senators yielding one full seat under the formula — not a fractional membership. To grant Senator Tañada a full seat as the lone LP-PDP-LABAN senator would result in thirteen senators, exceeding the constitutional maximum of twelve and violating proportional representation. The two-seat threshold was drawn from the earlier ruling in Coseteng v. Mitra, Jr.
• Grave Abuse of Discretion: The nomination and election of the respondent senators by the LDP majority, knowingly and by reason of numerical strength and not merely inadvertently, was an exercise of power inconsistent with the command of the Constitution. Such knowing violation of the constitutional mandate on proportional representation constitutes grave abuse of discretion correctible by judicial intervention.
• Propriety of Prohibition: The petition, treated as one for prohibition grounded on excess of jurisdiction and as one for mandamus for unlawful exclusion from a right or office, warranted the issuance of a writ. The election being null and void, respondent senators were ordered to desist from sitting and participating in the Commission’s proceedings, and the ex-officio Chairman was ordered to cease recognizing their membership. The Commission may validly perform its functions with fewer than twelve senators as long as the requisite constitutional quorum exists.

• Mandatory Proportional Representation in the Commission on Appointments — Section 18, Article VI of the 1987 Constitution requires that the twelve senators and twelve representatives be elected strictly on the basis of proportional representation of the political parties or organizations represented in each chamber. This mandate is mandatory and leaves no discretion to the majority party to disregard or dilute the proportional share of minority parties; the provision serves as a check on the majority and maintains the balance of power in the Commission on Appointments. The majority party cannot unilaterally round up its fractional membership by appropriating the fractional entitlement of another party.
• Two-Senator Threshold Rule — For purposes of representation in the Commission on Appointments under Section 18, a political party or coalition must have at least two duly elected senators for every seat in the Commission. A party or coalition with only one senator in the Senate is not constitutionally entitled to claim a seat in the Commission. Fractional memberships cannot be aggregated across different parties except through the formation of a formal coalition that meets the threshold.
• Quorum-Based Functioning of Constitutional Bodies — Constitutional collegial bodies, including the Commission on Appointments, may perform their functions and transact business even if not fully constituted, provided a quorum exists. The Constitution does not require the election and presence of all twelve senators and twelve representatives before the Commission can operate; it requires only a majority vote of all members and a quorum as defined by its rules.
• Grave Abuse of Discretion Through Numerical Disregard of the Constitution — An act of a legislative body exercised in a manner inconsistent with the command of the Constitution, consummated by sheer force of numerical superiority knowingly and not merely inadvertently, amounts to grave abuse of authority and is subject to correction by the judiciary.

• “The provision of Section 18 on proportional representation is mandatory in character and does not leave any discretion to the majority party in the Senate to disobey or disregard the rule on proportional representation; otherwise, the party with a majority representation in the Senate or the House of Representatives can by sheer force of numbers impose its will on the hapless minority.” — This passage encapsulates the Court’s core rationale for judicial intervention and the non-negotiable nature of proportional representation as a constitutional check.
• “To allow it to elect more than its proportional share of members is to confer upon such a party a greater share in the membership in the Commission on Appointments and more power to impose its will on the minority, who by the same token, suffers a diminution of its rightful membership in the Commission.” — This statement defines the constitutional injury that triggers the Court’s corrective power.
• “Drawing from the ruling in the case of Coseteng v. Mitra, Jr., a political party must have at least two senators in the Senate to be able to have a representative in the Commission on Appointments, so that any number less than 2 will not entitle such a party a membership in the Commission on Appointments.” — This is the explicit articulation of the two-senator threshold rule.

• Coseteng v. Mitra, Jr., 187 SCRA 377 (1990) — Controlling precedent. Established that the issue of filling membership in the Commission on Appointments is justiciable, not a political question; also provided the doctrinal basis for the two-senator-per-seat threshold adopted in this case.
• Tañada v. Cuenco, 103 Phil. 1051 (1957) — Distinguished. The earlier case involved Senator Lorenzo Tañada as the lone opposition senator among 24 Nacionalista senators; the factual context was wholly different, and no conflict of fractional entitlements among multiple minority parties existed. Not applicable as precedent for Senator Wigberto Tañada’s claim.
• Daza v. Singson, 180 SCRA 496 (1989) — Cited for the principle that where constitutional issues are properly raised, procedural questions acquire relatively minor significance, and the Court may brush aside technicalities to resolve matters of transcendent public importance.
• Osmeña v. Commission on Elections, 199 SCRA 750 (1991) — Cited for the same proposition on relaxing procedural rules in cases of transcendental importance.

• Section 18, Article VI, 1987 Constitution — The provision creating the Commission on Appointments and mandating proportional representation. Applied as the direct source of the mandatory rule that the majority party violated by rounding up fractional memberships to its advantage and by granting a seat to a party with only one senator.
• Sections 2 and 3, Rule 65, Rules of Court — Respectively, the rules on petitions for prohibition and mandamus. The petition was treated as one for prohibition (excess of jurisdiction) and, alternatively, mandamus (unlawful exclusion from a right or office) to afford full relief.

Narvasa, C.J., Gutierrez, Jr., Cruz, Feliciano, Padilla, Bidin, Griño-Aquino, Regalado, Romero, Nocon, Bellosillo, and Melo, JJ. Davide, Jr., J., concurred in the result. Medialdea, J., was on leave.

N/A — The decision was rendered by a unanimous En Banc, with all participating justices concurring in full or in the result, and no dissents.