It's traditional--at least it always was in the past--that the first speaker be from one party, the second speaker from the second party, the third from the third party, etc. I would hope that we would preserve that tradition, in which case we'd have either an NDP member or a Conservative first and second, then a Liberal third, and then proceed further. That's the way it's been done on committees that I've been a member of in the past.
On June 9th, 2011. See this statement in context.