Domingo Castro Pabustan JR.

As Punong Barangay of Barangay Santo Tomas, Domingo Castro Pabustan JR. presides over the Sangguniang Barangay of the barangay in San Luis, Pampanga, serving the 2023 - 2026 term. The Punong Barangay is a nationally recognised local government position under the Local Government Code of 1991 (Republic Act No. 7160).

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 Santo Tomas is one of 17 barangays in the municipality of San Luis, in the province of Pampanga, in the Central Luzon region of the Philippines. According to the 2020 Census of Population and Housing, Barangay Santo Tomas had a population of 2,524 residents — the constituency that Domingo serves as Punong Barangay. Pampanga is classified as a 1st by the Bureau of Local Government Finance.

Domingo Castro Pabustan JR. was elected to office in the most recent Barangay and Sangguniang Kabataan Elections (BSKE), which took place on October 30, 2023. Under Republic Act No. 12232, barangay officials elected in 2023 serve four-year terms, meaning the current mandate runs until 2026. The next BSKE is scheduled for Monday, November 2, 2026, per COMELEC Resolution No. 11191.

The Sangguniang Barangay — which Domingo Castro Pabustan JR. leads — is the legislative body of a Philippine barangay. It passes barangay ordinances and resolutions, approves the annual barangay budget, and exercises oversight over the barangay's programmes and projects. Its composition includes the Punong Barangay, seven kagawads, the SK Chairperson, a Secretary, and a Treasurer, all accountable directly to residents.