Local Government Code of 1991
Section 126. Local Referendum Defined. - Local referendum is the legal process whereby the registered voters of the local government units may approve, amend or reject any ordinance enacted by the sanggunian.
The local referendum shall be held under the control and direction of the COMELEC within sixty (60) days in case of provinces and cities, forty-five (45) days in case of municipalities and thirty (30) days in case of barangays.
The COMELEC shall certify and proclaim the results of the said referendum.