They won't react well. Free trade is not popular; Hillary is wise to keep her ultimate position on this hidden. That makes her like most politicians. How does it make her corrupt?
(Also, I should add that Hillary can be for free trade in general but against TPP because, as its' opponents claim, it has little to do with free trade. I don't agree with that position, but it's certainly a legitimate position, and based on everything Hillary has said and written on this issue, there is no reason to assume she is lying about it.)