I think that contingency should be dealt with in the Standing Orders. Canadian history actually had a situation where people could run for multiple members of Parliament at the same time. Earlier, we noted that this might be inefficient on the first round, but, Mr. Chair, in the unfortunate or rather bizarre circumstance in which, say, you would be replaced, I'm sure other chairs would want the promotion to your position. There's no harm in one of them putting forward their name to be elected if the Standing Orders would permit, and leave them as eligible. They could then resign and we'd have another election.
On June 3rd, 2014. See this statement in context.