New Zealand (Aotearoa) is most definitely within Polynesia, being one of the three corners of the Polynesian triangle, the other two being Rapa Nui (Easter Island) and Hawai'i.
I chose US on the poll, but feel that Oceania is more appropriate in a geographical sense, especially since so many Americans don't consider Hawai'i to be a part of "the states." (until it comes to war)