Generally speaking, the bigger the issue and the more clear-cut the issue, the more sense it makes to have a referendum. My colleague mentioned the referendum last year on same-sex marriage. That clearly meant a lot to a lot of people. It was very clear-cut. People could see the arguments and it really did engage society. But because our constitution is quite detailed, we do have to have referendums on things that logically shouldn't really go to a referendum.
On July 26th, 2016. See this statement in context.