“Indeed there were women in Jewish history who were leaders.”
As I pointed out above, according to Halacha, there are different types of positions, some of which are forbidden and some of which aren’t. I think that women might not be allowed to be president. On the other hand, they are allowed to be Nevios and Poskos like Chulda and Devora.
I think the reason that women are not allowed to be Rabbis is based on this halacha (that women are not allowed to have leadership positions).
In any case, I don’t know whether or not this would be a reason not to vote for Hillary since she is a goy, but I don’t think it’s a crazy idea. Not necessarily because there is a halachic issue involved but because the same reasoning could POSSIBLY apply here.