I can't cite any particular studies that talk about the increase in participation rates as a result of a fixed election date, although I'm assuming there is research done for this committee that could probably put forward some of that research.
I think, from an intuitive point of view, that there is in the population a general unease or lack of faith in the democratic system. That's not necessarily going to be fixed by something like this; as I said before, that's in the context of a larger democratic reform package. But I believe that knowing when the election is, having the ability to advertise widely, having the issues out there, will encourage more people to participate actively in the electoral process.
I'm assuming that the research capacity of this committee would be able to put forward some of the relevant studies. As a matter of fact, I think I read some of that in the background for your committee.