Section 47 of the Principal Act is amended as follows:(a) by omitting from subsection (3) "On" and substituting "Except as provided in subsection (6) , on" ;(b) by inserting the following subsection after subsection (5) :(6) A councillor may, during the period commencing on the 30th day before, and ending on the Thursday before, the day on which the notice of election for a forthcoming election is to be given, give notice to the general manager of his or her intention to resign with effect from the issue of the forthcoming certificate of election.