Local Government Act 1993 No 30
Current version for 1 July 2020 to date (accessed 8 August 2020 at 22:11)
Chapter 10 Part 4 Section 288
288   Delayed elections of councillors
(1)  If the Minister is of the opinion that it would be impracticable or inconvenient to hold an election as provided by section 287, the Minister may, by order published in the Gazette, appoint a subsequent Saturday for the election.
(2)  The subsequent Saturday must not be more than 28 days later than the day when the election should have been held.
(3)  If a day is appointed under this section for an election, the retiring councillors continue in office until the election is held and, if a retiring councillor resigns in the meantime, his or her office is vacant until the election is held.