Section 45Local Government Code of 1991 (Republic Act No. 7160), Sec. 45

Permanent Vacancies in the Sanggunian. -

(a) Permanent vacancies in the sanggunian where automatic succession provided above do not apply shall be filled by appointment in the following manner:

(1) The President, through the Executive Secretary, in the case of the sangguniang panlalawigan and the sangguniang panlungsod of highly urbanized cities and independent component cities;

(2) The governor, in the case of the sangguniang panlungsod of component cities and the sangguniang bayan;

(3) The city or municipal mayor, in the case of sangguniang barangay, upon recommendation of the sangguniang barangay concerned.

(b) Except for the sangguniang barangay, only the nominee of the political party under which the sanggunian member concerned had been elected and whose elevation to the position next higher in rank created the last vacancy in the sanggunian shall be appointed in the manner hereinabove provided. The appointee shall come from the same political party as that of the sanggunian member who caused the vacancy and shall serve the unexpired term of the vacant office. In the appointment herein mentioned, a nomination and a certificate of membership of the appointee from the highest official of the political party concerned are conditions sine qua non, and any appointment without such nomination and certification shall be null and void ab initio and shall be a ground for administrative action against the official responsible therefore.

(c) In case or permanent vacancy is caused by a sanggunian member who does not belong to any political party, the local chief executive shall, upon recommendation of the sanggunian concerned, appoint a qualified person to fill the vacancy.

(d) In case of vacancy in the representation of the youth and the barangay in the sanggunian, said vacancy shall be filled automatically by the official next in rank of the organization concerned.