"That will mean there will be some people who go to the polling booth absolutely clear they're not voting for us. We accept that but we also believe there's that constituency that will choose to vote for us and we think that's a very good-sized constituency."
He said he did not prepare an answer on the specific question about whether he physically disciplined his daughter with his advisers.
Nevertheless, "we have thought about how we present on this and I think I just need to be the typical New Zealand parent on this which I pretty much am".
Mr Craig said the party had employed extra communications and media advisers late last year with this year's election in mind.
He would simply refuse to answer questions where there was no upside for his party at the polling booth.
National Party-aligned blogger and pollster David Farrar said Mr Craig's comment about physically disciplining his daughter appeared to demonstrate some political savvy.
"It's a pretty good way of getting it out there because it turns it from a boring policy debate to, 'Oh my God, how dare he. He's breaking the law, someone should call the police."'
Media trainer Brian Edwards said he was not sure Mr Craig's work to improve his presentation would help him much.
"If you've got insane views and say insane things, probably media training will not do you much good."
Colin Craig: The gift of the gaffe
* When asked about the moon landing conspiracy theory he said: "I don't have a belief or a non-belief in these things, I just don't know."
* Said he had "no idea" whether moa are still alive in remote parts of New Zealand.
* During last year's marriage equality debate he said homosexuality was a choice and society was right to discriminate against gay relationships.
* In 2012 he said Kiwi women were the most promiscuous in the world and the taxpayer should not pay for their contraception.