Voting papers will be sent to all enrolled voters from Friday until next Wednesday.
The elections taking place in Otago are for mayors, councillors and community boards of the Dunedin City Council, Waitaki District Council, Clutha District Council, Central Otago District Council and Lakes District Council, and members of the Otago Regional Council and Southern District Health Board.
Voters have until noon on Saturday, October 12, to return their papers and help determine who will represent them for the next three years.
Registrar of electors Dee Vickers urged all Otago people to get enrolled and then have their say.
It was up to voters to choose who would best represent them and their communities and if someone was not in the system they could not influence it, she said.
It was important for people to understand every vote really did count and they should use their voice to say who they wanted to make decisions on their behalf.
''I remember, I think it was two elections ago, it was being reported that the last person elected made it in by four votes, but I still had 200 special votes to count at that stage.
"After those were counted it turned out that person lost by four votes and the next person got in. So don't tell me each vote doesn't count.''
Electoral officer Pam Jordan said 89,000 people would receive voting papers for the DCC, ORC and SDHB elections at the same time as voting papers for all Otago local bodies were received.
People could vote as as soon as they received the papers and needed to post their votes by Wednesday, October 9, for them to be received by noon on October 12.
Candidate information is included with the papers, but people can also visit
vote.co.nz to read more about candidates and ask them a question.
On the forms people should simply rank candidates in their preferred order, as part of voting under the Single Transferable Vote (STV) system - except for those voting for the Otago Regional Council, which will be elected under the First Past the Post (FPP) system, which requires people to tick their preferred candidates.
Under STV, voters rank their preferred candidates by placing a ''1'' in the box next to the candidate they most prefer, a ''2'' beside the candidate they next prefer, and so on.
Voters can rank as many or as few candidates as they like, and do not have to rank them all.
A detailed explanation of how STV works can be found on the stv.govt.nz website.
Mrs Jordan said the challenge this year would be that, for the first time, candidates were listed in random order on each paper, so voters would have to pay attention to list their preferred candidates in their preferred order.
If people ticked their papers, their vote would be invalid.
People who did not receive their voting papers by next Thursday should call into the Civic Centre to make a special vote, phone 477-4000 and ask for special votes, or email specialvotes@dcc.govt.nz.
Mrs Jordan she hoped people would get out and vote.
''They've only got this one opportunity to do this and it would be so great to have a good turnout.''
In 2010, 45,240 people - or 52.5% of those enrolled to vote - voted in the DCC, ORC and SDHB elections.
That was compared with 47.5% of those enrolled voting in the previous election, and 54.7% in 2004.
• A free lunchtime session with Associate Prof Janine Hayward, of the University of Otago's department of politics, on everything you need to know about the STV system will be held at the Dunningham Suite at the Dunedin Public Library on Friday at 12.15pm.