Peters still singing on campaign bus despite low polls

With four days to go, New Zealand First leader Winston Peters is on the final sprint after a marathon tour of the whole country.

From Bluff to Northland the New Zealand First bus has travelled almost 12,000 kilometres in total.

RNZ political reporter Jo Moir has exclusive access to the campaign, in what could be Mr Peters' last.

She's on board the bus, travelling with Mr Peters and his contingent from his old stomping ground of Tauranga.