It's quite extradinary that the level of debate in New Zealand politics has dropped to the point that politicians such as Pita Sharples call arguments they don't agree with 'evil' - in regard to Don Brash's view that there are no full-blooded Maori left in NZ and that a distinct ethnic group of Maori still exists. For what it's worth, I think Brash's points are probably correct and hardly that controversial. I'll provide some arguments and links to back up such an idea soon.
It's also interesting to remember that the Maori Party pronounced themselves above personal criticisism, but now label their opponents as 'evil'!
Update: The Sunday Star-Times has published scientific research that showing that on average Maori are at least 43% European. Clearly most Maori have a large amount of pakeha ancestry.