On updated figures made available early last night, 19,834 voting papers had been returned, which compared with 18,464 in 2010, a 2007 return of 18,422, and the 18,596 at the 2004 election.
The latest figures meant a 47.24 per cent vote, heading also for the biggest percentage turnout in Napier since the 55.59 per cent in 2001.
Elected to a third term, Nelson Park councillor Maxine Boag conjectured that because of the encouragement to get more people interested in their election, special votes in her Ward will show a particular increase.
Part of the push established significant numbers of people who weren't on rolls or hadn't received voting papers by mail.
The movement of people within the city, including those relocated from more than 100 Housing New Zealand rental properties between election, was a noticeable factor, she said.
The fact that there was a six-candidate race for mayor, and elections in all four wards, including eight seeking the two Nelson Park seats, would also have contributed, she said.
On preliminary figures released on Saturday, Wairoa appeared likely to hit a 60 per cent turnout high. Final results are expected later this week.