Helen Clark is openly campaigning for supporters of the Axis to vote Labour rather than Green. The Greens have been taking a significant chunk of the Labour vote in two of the three most recent polls.
Helen Clark is trying to persuade Labour supporters against strategic voting as an increasing number of polls show the Green Party is making inroads into Labour's support base.
When she was asked at a meeting with Foodstuffs workers if they should vote strategically to ensure a Labour coalition, she said the best way was to vote for Labour.
