Local Government Act 1993 No 30
Current version for 14 May 2020 to date (accessed 30 May 2020 at 08:15)
Chapter 10 Part 3 Section 282
282   Election of mayor
(1)  The mayor of an area who is to be elected by the electors is to be elected by an electorate comprising all the electors for the area, even if the area is divided into wards.
(2)  The mayor of an area who is to be elected by the councillors for the area is to be elected by the councillors from among their number.
(3)  A mayor elected for an area is one of the councillors of the council for the area.