Note: Elections New Zealand explains that "In
order to be able to contest the Party Vote, political
parties have to be registered with the Electoral
Commission. This must be done before Writ Day. While
independent candidates and members of an unregistered
party can contest electorate seats using their party
name, they are not able to contest the Party Vote."
Because registration status changes from time to
time, Mondo Politico recommends that you check the
Zealand Elections site for up-to-date information
concerning which parties are registered.