Maori Party MP Hone Harawira's white-bashing expletive-ridden email has lost his party the support of the voter he sent it to.

Former Waitangi Tribunal director Buddy Mikaere will no longer be voting for the party after receiving the email in which Mr Harawira accused "white motherf...ers" of "puritanical bullshit" for expecting him to follow the rules.

Mr Harawira skipped an important meeting in Brussels so he and his wife Hilda could spend a day in Paris. He paid for the extra travel himself.