Elmer Valdrez Mabitazan

Serving as Punong Barangay of Barangay Marcos in Rosario, La Union, Elmer Valdrez Mabitazan is currently in the 2023 - 2026 term. The Punong Barangay is the most senior elected official of a Philippine barangay and is responsible for the day-to-day administration of local services.

The Punong Barangay is the chief executive of the barangay, the smallest and most local unit of government in the Philippines. Duties under Section 389 of RA 7160 include enforcing barangay ordinances, organising and leading an emergency response team, calling and presiding over sessions of the Sangguniang Barangay, maintaining public order through the Lupong Tagapamayapa (peace council), and supervising the delivery of basic services to residents.

Barangay Marcos is one of 33 barangays in the municipality of Rosario, in the province of La Union, in the Ilocos Region region of the Philippines. According to the 2020 Census of Population and Housing, Barangay Marcos had a population of 1,501 residents — the constituency that Elmer serves as Punong Barangay. La Union is classified as a 1st by the Bureau of Local Government Finance.

Elected through the Barangay and Sangguniang Kabataan Elections, Elmer Valdrez Mabitazan is serving the current four-year term established under Republic Act No. 12232, which extended the barangay official's term from three years to four. The next BSKE will be held on Monday, November 2, 2026, following COMELEC Resolution No. 11191.

A Philippine barangay's Sangguniang Barangay is composed of one Punong Barangay, seven Sangguniang Barangay Members (kagawads), a Sangguniang Kabataan (SK) Chairperson representing the youth sector, a Barangay Secretary, and a Barangay Treasurer. Together, these officials administer the smallest unit of Philippine local government and deliver frontline services — from barangay clearance issuance to peace and order, from public health assistance to the barangay's share of the Internal Revenue Allotment.