DANYA LEVY - © Fairfax NZ News
John Key says MMP is a "weird" system and Winston Peters is warning any changes to it must keep extremists out of parliament.
First results from the MMP referendum show strong backing for keep the current voting system.
MMP has replaced winner-takes-all results with a bidding war every three years between National and Labour for the votes of a small party to form a government. The tail wags the dog.
New Zealanders are coming down on the side of voting to keep MMP and kicking the tyres to see how we can make it work better.
While most people want to retain MMP, some do not feel informed enough to choose between other options, polling shows.
The anti-MMP campaign has resurrected itself with a fresh new face, but experts believe voters will keep the current electoral system.
The battle for change in the electoral system has begun. Experts predict MMP is safe, but Kate Chapman looks at the options.
A group of prominent New Zealand authors, including Margaret Mahy and C K Stead, have come out in support of retaining MMP.
New Zealanders have been voting under MMP since 1996, and this year they will get the chance to say how they think it's going.