It will have absolutely no effect on the election because of her opponent. Trump has refused to expand his base and has done a terrible job of fending off these issues with women. If he had half the operation that Hillary has going, he might be winning.
I've read more than half of what has been released and I'm not at all surprised by what I've read. It shows a very calculating politician; just as expected from HRC. I think the rest of the electorate sees it the same way. Voters have such low expectations (morally speaking) about their elected officials, that these email won't change their minds. Sad, but true.