Jacinda Ardern has come out swinging at National's Steven Joyce after he blasted Labour's fiscal plan as having an $11.7 billion "budget hole".
"The important point is it's been debunked," Ms Ardern said.
However the sides continue to go back and forth.
National Party leader Bill English is adamant Labour has got their fiscal costing wrong, but Ms Ardern says her party has proved National's claims were "patently incorrect".
"I'm really disappointed by it, it took a day out of the campaign where we could have been talking about real figures, real ideas and real policies," she said today in Auckland.
When asked if there had been any apology over the claims, Ms Ardern said it should be directed "towards voters" after Mr Joyce's "misleading comments".
"They're the ones they attempted to mislead," she said.
"We've come out, stood by our fiscal plan, but it has been an absolute distraction and it was wrong. He should at least correct the record for the very least."
Today Mr English spoke to media at an event in Lower Hutt, saying commentators critical of Mr Joyce's assessment were simply wrong.
"We absolutely stand by the material that was put out there," Mr English said.