PremiumOpinionRichard Prebble is a former Labour Party minister and Act Party leader.

‌New Zealand First leader Winston Peters is likely to hold the balance of power again at this election. Photo / Mark MitchellNew Zealand First leader Winston Peters is likely to hold the balance of power again at this election. Photo / Mark MitchellFor the first time in decades, I have no prediction to make.I cannot remember an election this difficult to call. Usually, four months out, the question is not who will win but by how much.

This year both major parties and both major leaders are polling poorly. The left