In some of the state models in Australia, STV is widely used, and I'm thinking here particularly of the Tasmanian model, which is really seen as the precursor for others who are trying to break away from this party-centric model. It includes things such as randomization of the placement of candidates on the ballot to ensure that the parties can't essentially direct first preferences to their preferred candidates, those who have been the best at winning the favour of the party bosses and so on. I have forgotten the name of that particular process, but it's a process of ensuring that that doesn't occur.
They also allow you to mark down fewer vacancies. If there are, say, five vacancies and you only mark down four, or if there are 20 candidates on the ballot and you only mark down your top three, your ballot still counts. What about those provisions in this law?