The Representation Commission reviews and adjusts electorate boundaries after each 5-yearly population census.
The next boundary review will take place before the 2026 General Election.
Adjusting electorate boundaries gives all New Zealanders equal representation
Regularly adjusting the electorate boundaries makes sure each electorate has about the same number of people. This gives all New Zealanders equal representation in Parliament.
The Representation Commission uses total populations to adjust boundaries, rather than just registered voters, because members of Parliament represent everyone living in their area, not just those who can register to vote.
Timeline for the next review
Stats NZ released the number of electorates for the next election, and the average populations of those electorates, on 23 October 2024.
There will be 64 general electorates and seven Māori electorates at the 2026 General Election.
The calculations were made using the results of the 2023 Census and Māori enrolment data as at 1 April 2024.
Read the release from Stats NZ
The Representation Commission will review the names and boundaries of the electorates. Any changes they make will apply for the 2026 General Election.
It’s likely the review will take place in 2025. The timetable is still to be confirmed.
Changes to the Māori Electoral Option
Previously the number of Māori on the Māori and general rolls was provided to Stats NZ for the electoral calculations at the end of a 4-month Māori Electoral Option period when Māori could change between the Māori roll or general roll.
A law change in November 2022 replaced the 4-month Option period with a continuous Option which means people of Māori descent choose which roll to be on when they first enrol, and can then change rolls at any time except:
- in the 3 months before a general election
- in the 3 months before local elections which are held every 3 years
- before a parliamentary by-election if the change would move them into the electorate where the by-election is being held.
The date electoral roll data is supplied to Stats NZ also changed. Generally, the number of Māori electors provided to Stats NZ will be on the day of the census which takes place every five years.
If the census and general election take place in the same year, as they did in 2023, the data is provided as at 1 April the following year.
What is the Māori Electoral Option? (vote.nz)
What happens in a boundary review?
The Representation Commission has 6 months to:
- agree on the boundaries and names of the proposed electorates
- release the proposed boundaries for public consultation
- consider public submissions and finalise the boundaries
- publish its report on the final electorate names and boundaries.
What happens in a boundary review?
Who reviews electorate boundaries?
The Representation Commission is an independent body. Public officials and government and opposition appointees make up the Commission.
Who reviews electorate boundaries?
The Representation Commission is not responsible for local council boundary reviews. Local councils and the Local Government Commission are responsible for the review of local council boundaries.
About local government reorganisation (Local Government Commission)