The Vote for Change campaign is moving to expel a member who allegedly used to be a member of a white supremacist group.
The alleged involvement of Alex Fogerty, a founding member of Vote For Change, in white supremacist groups was highlighted by Martyn "Bomber" Bradbury on the blogsite Tumeke.
Mr Bradbury said Mr Fogerty used to be the site administrator for Australian New Nation, a group pushing for White Nationalism.
He suggested it was "intellectually skanky" to allow people with such views to take an active role in a campaign to dismantle MMP "which in turn leads to less political diversity".
Vote for Change, which was launched recently to advocate a change from MMP, said yesterday it was investigating the allegations against Mr Fogerty.