To be perfectly honest, there are no statistics on that. On the other hand, it is the last long weekend before the holidays. A lot of people go out of town, if only to another area, either in Quebec or somewhere else. So, I'm not sure that as far as election workers or returning officers, or even organizations and the voter turnout are concerned, this is the best date for the three days of advance polls, since the final advance poll day would be Thanksgiving Day.
Also, I would like to respond to Mr. Guimond's question about preliminary lists. Normally, when candidates file their nomination papers, they receive their preliminary list within five days. In the case we're talking about here, Day 31 would be September 18. So, in light of all the explanations provided previously, we see a problem in terms of updating the lists.