Again, this isn't something that I've done a lot of research on, personally, and I would simply reiterate what Professor Carty said. The Australian system has a bit of a stick. I cannot take seriously the proposal to give people tax credits for showing up to vote. I think there should be a modest penalty if they don't show up to vote. Again, I think the Australian system is the one that recommends itself.
On July 25th, 2016. See this statement in context.