Curia Market Research is no longer a member of the Research Association of New Zealand, following complaints and the resignation from RANZ by its principal, David Farrar.
[1] The sample size, margin of error, and confidence interval of each poll varies by organisation and date.
The parties shown in the table are National (NAT), Labour (LAB), Green (GRN), ACT, New Zealand First (NZF), Te Pāti Māori (TPM), and Opportunities (TOP).
Projections generally assume no material change to the electorate seats held by each party (ACT retains Epsom and Tāmaki, Greens retain Auckland Central, Rongotai and Wellington Central, Te Pāti Māori retains all six of their Māori electorates, etc).
Actual governments formed may include other parties beyond the minimum required for a majority; this happened after the 2014 election, when National only needed one seat from another party to reach a 61-seat majority, but instead chose to form a 64-seat government with Māori, ACT and United Future.