G.R. No. L-52413 September 26, 1981
MELITON C. GERONIMO, petitioner, vs. COMMISSION ON ELECTIONS and JULIAN C. PENDRE, respondents.

FACTS

Petitioner Meliton C. Geronimo, a retired lieutenant colonel, sought to run for mayor of Baras, Rizal in the January 30, 1980 local elections. On December 31, 1979, he wrote three letters to the local Kilusang Bagong Lipunan (KBL) chapter chairman, formally manifesting his intention and his group’s availability to be the official KBL candidates for all local elective positions, including mayor. In these letters, he identified himself as a loyal member of the KBL and requested the chapter to hold in abeyance any final line-up proclamation to accommodate his group’s application, pending a decision by the party’s Arbitration Committee. The local KBL chapter, through its secretary, private respondent Julian C. Pendre, informed Geronimo on January 3, 1980, that its official slate had already been chosen via a municipal convention on December 30, 1979.

ISSUE

The core issue is whether the Commission on Elections (COMELEC) committed grave abuse of discretion in disqualifying Geronimo from running as a Nacionalista Party candidate for mayor due to turncoatism, based on his prior affiliation with and application to the KBL.

RULING

The Supreme Court upheld the COMELEC’s resolution, finding no grave abuse of discretion. The legal logic centers on the constitutional and statutory prohibition against turncoatism under Section 10, Article XII(C) of the 1973 Constitution and Batas Pambansa Blg. 52. The Court ruled that Geronimo’s three letters constituted clear and substantial evidence of his affiliation with the KBL. By formally applying to be the KBL’s official candidate, declaring loyalty to the party, and seeking its internal arbitration process, he effectively became a member of that party for the purposes of the anti-turncoatism law. His abrupt shift to the Nacionalista Party on January 4, 1980, immediately after his KBL application was rejected, exemplified the very political opportunism and “virus of turncoatism” the constitutional provision aimed to prevent. The Court emphasized that the prohibition was designed to promote party discipline and stability, and Geronimo’s actions, taken in evident bad faith, violated this principle. The COMELEC’s finding was supported by substantial evidence, and absent a showing of grave abuse of discretion, its factual and legal determination was sustained. The petition was dismissed.