a Voting System

16 Where there are more than two candidates, the voting system used for elected mayors is the Supplementary Vote system. Under this system, voters cast first and second preference votes. After counting all of the first preference votes, if no candidate has secured a simple majority of the first preference votes cast, all but the top two candidates are eliminated. Any of the eliminated candidates' second preference votes cast for the remaining candidates are added to those totals, and the one with the most votes is elected as elected mayor.
Where there are only two validly nominated candidates, the first-past-the-post system is used.

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