As candidates begin preparing, campaigns are under way to try to ensure all eligible voters are on the rolls, with a particular focus on those who will have turned 18 since the last general election in 2011.
On Monday, it was estimated that more than 31 per cent of those eligible to vote in the 18-24 years bracket nationally were not on the rolls.
In the Napier electorate, which includes Wairoa, 21.8 per cent of the estimated 5940 eligible in that group were still not registered, and in Tukituki about 20.5 per cent of an estimated 6400 were still not enrolled, but in Wairarapa, which includes most of Central Hawke's Bay, just 6.3 per cent of the estimated 4649 eligible hadn't signed-up.
General elections are held in New Zealand every three years to select the country's Members of Parliament.