This is a list of elections that were held in New Zealand and associated states and territories in 2025. Included are any local or national elections or by-elections, as well as elections to iwi governing bodies, and any party leadership votes.
Overview of key electoral events Parliamentary by-elections +DateElectorateMP beforeMP after6 SeptemberTāmaki MakaurauTakutai Tarsh Kemp (TPM)Oriini Kaipara (TPM)
Party leadership votes DatePartyRolePerson beforePerson afterSupportVoters9–10 August rowspan="2" GreenMarama DavidsonMarama Davidson >75%Green local branch delegatesChlöe SwarbrickChlöe Swarbrick >75% 17 September NZ First Deputy Vacant Shane Jones 8 / 8 NZ First MPs 16 November TOP Leader Vacant Qiulae Wong ? TOP board members
Local elections Territorial authorities representing over 100k people +DateCouncilCouncil control beforeMayor beforeCouncil control afterMayor after11 OctoberAucklandNo majorityWayne BrownNo majorityWayne Brown (Fix AKL)11 OctoberChristchurchNo majorityPhil MaugerNo majorityPhil Mauger11 OctoberWellingtonNo majorityTory Whanau (GRN)No majorityAndrew Little (LAB)11 OctoberHamiltonNo majorityPaula SouthgateNo majorityTim Macindoe11 OctoberDunedinNo majorityJules RadichNo majoritySophie Barker11 OctoberLower HuttNo majorityCampbell Barry (LAB)No majorityKen Laban11 OctoberWhangāreiNo majorityVince CocurulloNo majorityKen Couper
Regional councils representing over 100k people +DateCouncilCouncil control beforeCouncil control after11 OctoberCanterburyNo majorityNo majority11 OctoberGreater WellingtonNo majorityNo majority11 OctoberWaikatoNo majorityNo majority11 OctoberBay of PlentyNo majorityNo majority11 OctoberHorizonsNo majorityNo majority11 OctoberOtagoNo majorityNo majority11 OctoberNorthlandNo majorityNo majority11 OctoberHawke's BayNo majorityNo majority11 OctoberTaranakiNo majorityNo majority11 OctoberSouthlandNo majorityNo majority
Local referendums
+DateJurisdictionSubjectFor%Against%Result11 OctoberVariousMāori wards542,134 50.25467,92343.3718 councils for; 24 councils against11 OctoberLower HuttAmalgamation17,42954.9614,28345.04Pro-amalgamation11 OctoberPoriruaAmalgamation9,58156.437,39943.57Pro-amalgamation
Iwi elections + Date Iwi Role Person before Person after Support Voters 24 April Ngāti Kahungunu Chair Bayden Barber Bayden Barber 62% Iwi members
April to June 24 April: Ngāti Kahungunu iwi elections 29 April: Tauranga City Council by-election in the Māori ward 27 May: Mangaia mayoral by-election
July to September 9–10 August: Confirmation vote of Green Party co-leaders held at their AGM per party constitution
6 September: Tāmaki Makaurau by-election 17 September: New Zealand First caucus selects Shane Jones as deputy party leader.
October to December 11 October: New Zealand local elections New Zealand local referendums on Māori wards and constituencies 16 November: The Opportunities Party board select Qiulae Wong as the party's new leader
See also 2025 in New Zealand
References