Section 44Local Government Code of 1991 (Republic Act No. 7160), Sec. 44

Permanent Vacancies in the Offices of the Governor, Vice-Governor, Mayor, and Vice-Mayor. - If a permanent vacancy occurs in the office of the governor or mayor, the vice-governor or vice-mayor concerned shall become the governor or mayor. If a permanent vacancy occurs in the offices of the governor, vice-governor, mayor, or vice-mayor, the highest ranking sanggunian member or, in case of his permanent inability, the second highest ranking sanggunian member, shall become the governor, vice-governor, mayor or vice-mayor, as the case may be. Subsequent vacancies in the said office shall be filled automatically by the other sanggunian members according to their ranking as defined herein.

(b) If a permanent vacancy occurs in the office of the punong barangay, the highest ranking sanggunian barangay member or, in case of his permanent inability, the second highest ranking sanggunian member, shall become the punong barangay.

(c) A tie between or among the highest ranking sanggunian members shall be resolved by the drawing of lots.

(d) The successors as defined herein shall serve only the unexpired terms of their predecessors.

For purposes of this Chapter, a permanent vacancy arises when an elective local official fills a higher vacant office, refuses to assume office, fails to qualify, dies, is removed from office, voluntarily resigns, or is otherwise permanently incapacitated to discharge the functions of his office.

For purposes of succession as provided in the Chapter, ranking in the sanggunian shall be determined on the basis of the proportion of votes obtained by each winning candidate to the total number of registered voters in each district in the immediately preceding local election.