How many registered Political parties have 500 members?

Now that the Anti-Free Speech Legislation and the "feather my nest" legislation is also in force I would be expecting Helena Catt to get off her prodigous ass and ask all registered political parties who can now out-spend almost anyone in advertising to prove that they indeed do have 500 members.

I bet Peter Dunne doesn't, I know Jim Anderton doesn't……Bet she won't though.?