Turned out not to be the case in NY, you mean?
Turned out not to be the case for Democrats as well. Republican and conservative spokesmen have been characterizing Hillary for many years as some kind of radical feminist, out of touch with the realities of everyday people. Yet throughout the primaries it was Hillary who was popular with the older and blue collar workers, as opposed to Obama who was popular with those in and just out of college. True, we are talking about just Democrats here, but the truth of where Hillary's support was really from in the Democratic party was so completely at odds with the image put forth of her all these years that you have to wonder how much the image holds true even for Republicans and those who lean that way.
I don't expect many Republicans to actually like her, but at this point I doubt if they dislike her much more than they dislike any other major figure of the Democratic party. The idea of additional battalions of Republicans miraculously arising out of sickbeds just to vote against Hillary is part of a stereotype the Democratic primaries proved to be fallacious.
As far as the poll being hypothetical, I would point out that in the last days the polls varied quite a bit from each other. If I had my choice for accuracy, I would bet on the accuracy of the answers given for people who have already showed up to vote over those who claim they will, or the answers they give about choices not on the ballot.