Choose a year and election type, then select a metric to compare areas.
Turnout: voters as a percentage of enrolled electors.
Source: DIA local authority election statistics
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About the NZ Local Election Data Explorer
This dashboard explores DIA local authority election statistics by election year. The 2025 view includes all current layers. The 2022 view includes territorial authorities, mayors, Māori wards, boards, subdivisions, regional councils and constituencies.
How to use
Choose a year, election type and metric. Then select an area from the search or records list, or click the map on desktop.
Glossary
- Turnout
- Number of voters divided by the number of electors on the roll in contested areas.
- Blank votes
- Blank votes cast divided by total voters.
- Informal votes
- Informal votes cast divided by total voters.
- Special votes cast
- The number of voters who cast a special vote.
- Special votes allowed %
- Allowed special votes, residential and ratepayer, divided by total special votes cast.
- Special votes disallowed %
- Special votes cast minus special votes allowed, divided by total special votes cast.
- Candidates per vacancy
- Candidates divided by positions.
- Uncontested
- An election in which the number of candidates did not exceed the positions available.
- No statistics
- No usable value is available for the selected metric. This is shown separately from an uncontested election and from an area outside the selected layer or filter.
Credits and contact
Designed by Ben Roser, Independent Election Services Ltd. For more information, contact info@electionservices.co.nz.