Under the Electoral Act 1993, the boundaries of the general and Māori electorates must be reviewed after each population census and Māori Electoral Option, which is also conducted every five years.
Using the census results, the Government Statistician reports on the number of General and Māori electorates that will be required in future elections. With assistance from Stats NZ, the Representation Commission prepares draft boundaries which it then releases for public comment. The final electorate boundaries are released after a round of consultation and public hearings. These boundaries remain in place until the next review is completed.
The current electorate boundaries released in April 2014 were used for the 2014 and 2017 elections. The next boundary review will take place in 2019/20 and the new boundaries will apply to the 2020 and 2023 General Elections.
See also ‘Electorates’ in this definitions group.