I appreciate your amendment. I think it's a good amendment, specifying that an attestation only has to come from someone who resides in the same constituency, rather than the same polling division—or poll, as we would colloquially say.
But I have to tell you that I don't think this is a major impediment anyway. It's true that riding maps only come out 24 days before the election—a source of frustration to all candidates, regardless of party—but having gone through a radical redistribution in my past, I can tell you that polling division boundaries don't change. The number that is assigned may be changed. It was poll number one in the old riding map and following a redistribution it's now poll number 50 or 60, but poll boundaries actually don't change.
So while I applaud this, I think this was a bit of a non-problem that you've been presented with, and I wanted to alert you to the fact that this is not really a substantive practical issue.