Aldaba, et al. vs. COMELEC

The constitutionality of legislative apportionment laws is a judicial question subject to the SC's power of review under Section 1, Article VIII of the Constitution; compliance with the 250,000 population requirement for city representation is therefore justiciable, and population data used to justify district creation must strictly conform to the standards of reliability and authoritativeness under Executive Order No. 135.

Congress enacted RA 9591 to create a separate legislative district for Malolos City, carving it out from the First Legislative District of Bulacan. The law relied on population projections suggesting the city would reach 250,000 inhabitants by the 2010 elections. Petitioners challenged the law's validity before the SC.

• Filed with SC: Petition for Certiorari and Prohibition assailing the constitutionality of RA 9591.
• SC Decision: January 25, 2010 — SC declared RA 9591 unconstitutional.
• Motion for Reconsideration: February 16, 2010 — SC denied Malolos City's motion for leave to intervene and motion for reconsideration.
• Supplemental Motion for Reconsideration: February 22, 2010 — Filed by COMELEC (adopting Malolos City's arguments); denied by this Resolution with finality.

• Nature of Action: Petition for Certiorari and Prohibition seeking to nullify RA 9591 on constitutional grounds.
• Parties: Petitioners are registered voters and taxpayers; Respondent is the COMELEC.
• Legislative Basis: RA 9591 created a legislative district for Malolos City based on a projected population of 254,030 by 2010, using a growth rate of 3.78% (per Miranda Certification).
• Official Census Data: The 2007 Census of Population showed Malolos City had only 223,069 inhabitants as of August 1, 2007.
• Recalculated Projection: Using Miranda's own 3.78% growth rate, the projected population for August 1, 2010 would only be 249,333, falling short of the 250,000 threshold.
• Alternative Sources Cited by COMELEC:
  • 2007 Census PMS 3 Progress Enumeration Report (preliminary data showing 255,543 as of November 2007);
  • Certification from Malolos City Water District (281,413 as of July 31, 2008);
  • Certification from Liga ng Barangay (258,229 as of August 22, 2008).
  • Geographic Effect: The creation of Malolos City's district left the municipality of Bulacan geographically isolated from the remaining municipalities of the First Legislative District (bounded by Malolos City, the Second District, the Fourth District, and Manila Bay).

• RA 9591 violates Section 5(3), Article VI of the Constitution because Malolos City lacks the required 250,000 population.
• The population indicators used by Congress are unreliable, non-authoritative, and violate the standards of EO 135.
• The district created is not contiguous, compact, or adjacent as required by the Constitution, given the isolation of the municipality of Bulacan.

• The reliability and authoritativeness of population indicators used by Congress in enacting RA 9591 constitute a political question and are therefore non-justiciable.
• Congress relied on multiple population indicators (Miranda Certification, 2007 Census PMS 3, Water District, Liga ng Barangay) demonstrating compliance with the 250,000 threshold.
• The OSG (for COMELEC) alleged that the 2007 NSO census data was "sloped" to make it appear Malolos City would fall short of the constitutional requirement in 2010.

• Procedural Issues:
  • Whether the determination of the reliability and authoritativeness of population indicators used by Congress in creating legislative districts presents a justiciable controversy or a political question.
• Substantive Issues:
  • Whether RA 9591 complies with the 250,000 population requirement under Section 5(3), Article VI of the Constitution.
  • Whether the population certifications used (Miranda, Water District, Liga ng Barangay) satisfy the standards of authoritativeness and reliability under EO 135.
  • Whether the legislative district created by RA 9591 complies with the constitutional requirement to comprise contiguous, compact, and adjacent territory.

• Procedural: The issue is justiciable. The SC has the constitutional duty under Section 1, Article VIII to determine grave abuse of discretion. Legislative apportionment laws are subject to judicial review; subsidiary questions regarding compliance with specific constitutional limitations (such as the 250,000 population floor) are necessarily justiciable. To hold otherwise would reduce the SC to a "rubberstamp" and render Section 5(3), Article VI meaningless.
• Substantive:
  • Population Requirement: RA 9591 is unconstitutional. Under Section 3 of the Ordinance appended to the 1987 Constitution, a city is entitled to representation only if it breaches the 250,000 mark before the immediately following elections. COMELEC failed to prove Malolos City met this threshold by the May 10, 2010 elections.
  • Reliability of Data: The Miranda Certification is unreliable and non-authoritative under EO 135 because: (a) it was not based on demographic projections declared official by the NSCB; (b) it was not projected as of the middle of 2010; and (c) Miranda was not the NSO Administrator nor his designated certifying officer.
  • Alternative Data: The 2007 Census PMS 3 constitutes preliminary data subsequently adjusted to the official 223,069 figure. The Water District and Liga ng Barangay certifications are incompetent sources under EO 135; neither entity is authorized to conduct population censuses without NSCB approval and NSO technical supervision. Relying on such disparate sources highlights the danger of using non-NSO data for legislative apportionment.
  • Contiguity/Compactness: RA 9591 violates Section 5(3), Article VI. The creation of Malolos City's district isolates the municipality of Bulacan from the geographic mass of the First District. The geographic layout is not an insuperable obstacle; Congress could have included Bulacan in Malolos City's district to satisfy the constitutional requirements of geographic unity.

• Political Question Doctrine (Rejection in Apportionment Cases) — The constitutionality of legislative apportionment acts is a judicial question. The mere impact of litigation on political situations does not render it non-justiciable. Courts may inquire into whether apportionment laws transgress constitutional limitations, and the "end does not justify the means" (improvement of representation cannot justify constitutional violation).
• Executive Order No. 135 Standards — To be authoritative and reliable, population certifications must satisfy: (a) for intercensal years, based on demographic projections declared official by the NSCB; (b) certification must be as of the middle of the year; and (c) issued by the NSO Administrator or his designated certifying officer. For LGU-conducted censuses: requires prior NSCB approval and NSO technical supervision from planning to data processing. Certifications from public utilities (e.g., water districts) or the Liga ng Barangay are excluded.
• Section 5(3), Article VI Requirements — Legislative districts must: (1) represent a population of at least 250,000 for cities (or adhere to proportional representation); and (2) comprise, as far as practicable, contiguous, compact, and adjacent territory.
• Section 3 of the Ordinance Appended to the 1987 Constitution — Entitlement to representation is prospective: a city whose population increases to over 250,000 shall be entitled to representation in the immediately following election.

• "The constitutionality of a legislative apportionment act is a judicial question, and not one which the court cannot consider on the ground that it is a political question."
• "To deny the Court the exercise of its judicial review power over RA 9591 is to contend that this Court has no power 'to determine whether or not there has been a grave abuse of discretion amounting to lack or excess of jurisdiction on the part of any branch or instrumentality of the Government,' a duty mandated under Section 1, Article VIII of the Constitution."
• "There can be no surer way to render meaningless the limitation in Section 5(3), Article VI of the 1987 Constitution."
• "This unbecoming attack by the government's chief counsel on the integrity of the processes of the government's census authority has no place in our judicial system."
• "The end does not justify the means."

• Macias v. COMELEC — Controlling precedent establishing that district apportionment laws are subject to judicial review and are not political questions.
• Navarro v. Ermita — Cited to demonstrate the SC's recent exercise of judicial review to strike down a law creating a province for non-compliance with population and land mass requirements.
• Menzon v. Petilla — Cited for the principle that courts may adopt standards from parallel statutes (by analogy) to fill gaps in the law where no express prohibition exists.

• Section 5(3), Article VI of the 1987 Constitution — Mandates proportional representation and the 250,000 population floor for cities; requires districts to comprise contiguous, compact, and adjacent territory.
• Section 1, Article VIII of the 1987 Constitution — Grants the SC the power of judicial review to determine grave abuse of discretion by any branch of government.
• Section 3 of the Ordinance Appended to the 1987 Constitution — Governs the timing of entitlement to representation for cities reaching the 250,000 population threshold.
• Executive Order No. 135 — Prescribes standards for official population projections and certifications by the NSO.
• Section 7 of Republic Act No. 7160 (Local Government Code) — Requires NSO certification for compliance with population requirements in the creation/conversion of LGUs (cited to show Congress recognizes NSO data as the exclusive standard for population thresholds).
• Republic Act No. 9591 — The law declared unconstitutional for creating Malolos City's legislative district.

N/A. (Puno, C.J., Carpio Morales, Brion, Del Castillo, Villarama, Jr., Perez, and Mendoza, JJ., concurred in the Resolution).

• Justice Abad — Dissented from the main Decision dated January 25, 2010 (which this Resolution affirms). Joined by Corona, Nachura, Peralta, and Bersamin, JJ. (The Resolution notes their adherence to the dissent on the main opinion).