There are half a million New Zealanders living overseas who could vote in this year's election and in London, the Green Party is already trying to snare a few of them.
They are using a new eco-documentary produced by Green candidate Lizzie Gillett as their key campaigning tool.
The film picks up where its creators' say Al Gore's An Inconvenient Truth left off.
The year is 2055, and the eco-documentary is a futuristic look at what happened to the world, based on the decisions we made today. it begins with central London under water.
Gillet says she hopes the film will influence millions of people.
"I'm standing for the Greens to try and get into the political sphere because that's where the real power lies," she said.
At a special screening in London, the Greens used the film The Age of Stupid to lobby for the ex-pat party vote.
The overseas vote is important to the Greens and they are urging Kiwis to view the credit crunch as a short term problem and put ecology before economy in this year's election.
It has got Kiwis thinking about what will influence their vote.
The movie does not reveal anything new as such, but it is unique in its 'back to the future' perspective.
Regardless of whether the Age of Stupid helps the Greens' campaign or not this election, the documentary will go on worldwide release next year - the goal being to make people think now about what might happen next.
3 News