I suppose that's a theoretical possibility, but as soon as people start to play games, they would have to be able to justify that to the members of the House, and in a secret ballot I could very easily see people playing games and not getting the confidence of their fellow members.
My observation is that members of Parliament tend to be pretty mature. We have our moments, particularly in question period, where things get out of control, but if you're going to run for office and spend energy campaigning for a position, you're not likely to resign to try to get some other position in a deal with another member when you have no guarantee that the House will ratify that. So I would say, based upon the experience of the British Parliament and my knowledge of my fellow MPs here, that's an extreme theoretical. It's so extreme, I doubt if we would see it.