Again, as I indicated earlier, once you first register in the international registry, the act provides you a range of options to determine your place of residence in Canada. Once that choice is made, it's crystallized. You cannot change it afterwards. You cannot have a place of residence in Canada for one election and then for the next one have another place. Your ballot will always be counted for the place of residence in Canada that you first selected.
On May 7th, 2015. See this statement in context.