As the political landscape of the Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) prepares for pivotal electoral transitions, a major legal challenge has emerged. On May 15, 2026, a formal petition docketed as SPA No. 26-002 was submitted to the Comelec Bangsamoro Registration and Accreditation Committee (Brac). The petition directly targets three incumbent Members of Parliament (MPs) of the Bangsamoro Transition Authority (BTA): Suwaib L. Oranon, Dan S. Asnawie, and Sheik Mohidin M. Usman. The core accusation rests on the Bangsamoro Electoral Code (BEC), specifically prohibiting dual party membership. The petitioners claim that these individuals maintained active allegiance to another political entity while being nominated by the Bangsamoro Federalist Party (BFP). This development raises crucial questions regarding party discipline, legislative integrity, and the strict enforcement of the newly enacted electoral frameworks in the autonomous region.