Important Election Update

I have a question. As a Canadian, our election process is slightly different. There is one thing that is kinda annoying me that I've seen recently in this election. They announce who voted in the advance polls? I was surprised to see those results released prior to the rest of the election as that, I would imagine, would influence the votes of those voting on November 4th. Also, I know in Canada we have a limit as to when the last poll results can be released (I think the cut off is 48 hours before the election) but they seem to be continuing full steam at this point and right up to election from what I can tell. Is this correct or is there a cut-off?