Christchurch people are the most engaged voters at the local body elections, while Wellingtonians are the least interested among the big four cities, voting returns show.

In Tauranga no one is voting, but that's because the Government decided to stick with appointed commissioners until July 2024.

With four days until voting closes at midday on Saturday, a glance at the daily voting returns shows many councils are on track for a similar voter turnout to 2019, when the nationwide turnout was 42.2 per cent. This was a big drop on the 57 per cent figure in 2016.

Just 15 per cent of Wellingtonians have voted in the local body elections. Photo / File

In Auckland, where all eyes are on businessman Wayne Brown and Manukau councillor Efeso Collins to replace outgoing Mayor Phil Goff, the daily voting count has been jumping up and down.

Yesterday, it was nearly neck-and-neck with 2019's figure of 17 per cent. Today's returns are 19.8 per cent, well down on the 22.6 per cent figure in 2019. It remains to be seen if the final figure will reach 2019's turnout of 35.3 per cent.

Aucklanders' interest in local body elections has been slipping since the first Super City election when John Banks and Len Brown battled it out. The voter turnout then was 50.2 per cent.

Auckland mayoral candidates Efeso Collins, left, and Wayne Brown are fighting it out to be the next mayor of the Super City. Photo / Alex Burton

Wellingtonians, believed to be the most politically tuned people in New Zealand, have been slow out of the blocks with just a 15.2 per cent vote for the leading mayoral contenders Tory Whanau, Paul Eagle and Andy Foster as of yesterday. This figure is an improvement on 13.6 per cent at the same time in 2019.

In Christchurch, where people are voting for a new mayor to replace Lianne Dalziel, one-in-four voters have got their ballots in, compared with 20 per cent three years ago.

Dunedin people are tracking a similar path to 2019 with 21 per cent of votes cast and in Invercargill where Newstalk ZB radio host Marcus Lush is taking on the veteran Tim Shadbolt in a field of mayoral hopefuls, 28 per cent of votes are in, compared with 30 per cent at the same time in 2019.

The Hutt City Council has the dubious record of one of the lowest voter turnouts so far. It is sitting on 14.2 per cent, not far behind neighbouring Upper Hutt City Council on 17.7 per cent.

In the past day, Prime Minister Jacinda Ardern has expressed concern about the low level of voter turnout, saying it may be time to look at what will bring the greatest engagement from voters.

Prime Minister Jacinda Ardern is concerned about the low level of voter turnout. Photo / Mark Mitchell

She said turnout had traditionally been low in local body elections until the "final period".

"It's hard to say where it will land, but I am worried because you would of course want to see it a bit higher than it is now," she said.

"I do think it's time for us to have to work with local government and say, from local government's perspective, 'What do you think will bring the greatest engagement with your voters?'" she said.

Voting in the local body elections closes at midday on Saturday.