Many people across New Zealand will be receiving their local government election voting papers today.

Anyone who is enrolled can have a say in who their local leaders are, but voter turnout has been trending downwards for decades.

Local government and political representation expert Jean Drage told Morning Report voters should not put off filling in their voting papers once they received them.

"Don't ... put them into the pile and forget about them.

"I would encourage people to vote as soon as possible, rather than leaving it, because there's a lot of work to do to actually vote."

She encourages voters to take some time to understand what their local candidates stood for, saying the pamphlet provided alongside the voting papers was "only a beginning".

Post-election research shows around a third of registered electors don't vote because they feel they don't have enough information about the candidates.

However, there's plenty of information available for voters wanting to dig deeper, Drage says, including on the Policy NZ website and on council websites, which often listed the public meetings being held.

The focus on some of the more controversial candidates standing in local body elections this year had made people "quite wary" about who to vote for, Drage believes.

"What I'm seeing is that people are doing a lot more work ... we're seeing a lot of candidates working quite hard to get their message out."

There were also a lot of public meetings being held and they were well-attended, she said.

"I think that people are being quite careful about who they vote for."

She encourages voters to contact candidates directly if they have questions.

"Email candidates, ring them up, find out where they stand on the issues that are important to you."

STV or FPP?

Another issue that could complicate things for voters was the fact that different councils around the country used different methods of voting, Drage says.

Some use a single transferable voting system, where voters are required to rank candidates in order of their preference, while others use the first past the post system, which only allows voters to select one candidate with a tick.

"There's 15 councils that are using STV this time round, so that's another complication for some people that live in areas where they might have STV for ... the council, and first past the post for the regional council," she says.

"You have to be really clear that when you do your voting that you know exactly which system's being used."

Important dates

Voting documents for this year's local government elections will begin appearing in people's letterboxes from today and all registered electors should receive their papers by September 21.

Drage says anyone who did not receive their voting papers should contact their local council and request them.

Once completed, voting papers can be dropped into a post box (until October 4) or into one of the secure ballot boxes at council service centres and libraries.

Votes must be returned by noon on Saturday, October 8.

-RNZ.