Section 41Local Government Code of 1991 (Republic Act No. 7160), Sec. 41

Manner of Election. -

(a) The governor, vice-governor, city mayor, city vice-mayor, municipal mayor, municipal vice-mayor, and punong barangay shall be elected at large in their respective units by the qualified voters therein. However, the sangguniang kabataan chairman for each barangay shall be elected by the registered voters of the katipunan ng kabataan, as provided in this Code.

(b) The regular members of the sangguniang panlalawigan, sangguniang panlungsod, and sangguniang bayan shall be elected by district, as may be provided for by law. Sangguniang barangay members shall be elected at large. The presidents of the leagues of sanggunian members of component cities and municipalities shall serve as ex officio members of the sangguniang panlalawigan concerned. The presidents of the "liga ng mga barangay and the pederasyon ng mga sangguniang kabataan" elected by their respective chapters, as provided in this Code, shall serve as ex officio members of the sangguniang panlalawigan, sangguniang panlungsod, and sangguniang bayan.

(c) In addition thereto, there shall be one (1) sectoral representative from the women, one (1) from the workers, and one (1) from any of the following sectors: the urban poor, indigenous cultural communities, disabled persons, or any other sector as may be determined by the sanggunian concerned within ninety (90) days prior to the holding of the next local elections as may be provided for by law. The COMELEC shall promulgate the rules and regulations to effectively provide for the election of such sectoral representatives.