The Greens have a solution to this: lowering the disclosure threshold to $1,000. Which led to the obvious question last night on Twitter: have they considered voluntarily disclosing to this lower threshold? The answer: no:
We advocate lower legal threshold for disclosure of identity of donor. Haven't adopted lower voluntary threshold for disclosure.
As I've argued before, this is an appalling mistake. Firstly, it makes the Greens look like hypocrites. And secondly, it gives up the most powerful weapon they have in this struggle: public opinion. People like transparency, and they hate politicians who act out of self-interest and appear to have something to hide. The quickest way to force the dirty old parties to change the law is to be the change you want to see in the world and offer the public a visibly clean alternative. There's no legal impediment to doing so (though donors would have to be informed up front), and they undoubtedly have the information (both because they're required to collect it to comply with the present legal regime, and because they will want it themselves for fundraising purposes). The only thing stopping them from doing it is themselves.