National has shunned a Facebook page claiming to be in support of the party, saying it doesn't condone the racist and sexist comments being posted.
Screenshots from the private New Zealand National Party Voters and Supporters Facebook page - which has more than 3,400 members - show hate speech, racism and sexist comments from the so-called diehard right wing supporters.
A National Party spokesperson told the Herald it only became aware of some offensive comments on the page today and its digital team was now asking Facebook if there was a way for the group to stop using the National Party's name.
"This is a Facebook page that is not supported or condoned by the National Party. We became aware earlier today of some offensive comments on it which is the first we have heard of it."