The Government has committed 40 Defence Force personnel and three helicopters to Papua New Guinea to support Australian troops during the general election, which begins on June 23.
Foreign Minister Murray McCully said Australia and new Zealand had been asked for help by the PNG Government.
The New Zealand troops would support local authorities in the delivery of a safe, free and fair election by providing logistical support and observers.
They would ensure electoral officials and ballot boxes could be delivered to remote areas.
He was not sure whether they would be armed, but added: "The [Defence Force] will be there for peaceful purposes, not deployed in the sense that they're expecting to be dealing with trouble, simply for logistical support.''
Asked whether personnel would stay longer if the region became more unstable, he said: