Right, but people said the same thing about Obama, that they were excited to elect a black president. That doesn't make it an advantage.
Yeah and you keep bringing up Obama but I'm really not interested in that parallel. Take it or leave it. You say you can look at one to inform the other, I say you can't and you're going to have to actually demonstrate this to me before going any further with that. Sexism and racism have VERY different motivations.
Here, I can give two other examples in where I see female gender being a positive influence:
I read in Bitch magazine (it was my girlfriend's) a table comparing people running in the primaries. Carly Fiorina was listed, and compared to the other R runners she got a pretty favorable listing. Despite the fact that she's wildly anti-abortion and has been doing damage to public perception of Planned Parenthood and the like, something that a feminist publication would normally be super against. It seemed pretty blatant to me that she was favored because she's the female candidate.
The other example is that I have seen Hillary's campaign on at least two occasions has called Bernie or his campaigners sexist over things that have no real grounds. Campaigns make accusations over what they think will resonate with prospective voters. They know accusations of sexism will make people want to support her more. That sort of thing happens all over the place in the media and it only works if you're a woman.
Yes it's harder to get away with blatant sexism against women these days but there still have to be signs of it to say anything. Even if those signs are subtle and coded. I'm just not seeing them in Bernie supporters, or not anything like I'm seeing the overt bias I'm seeing in Hillary supporters in articles, comment sections, tweets, etc.
There is a popular narrative today, perhaps more popular than ever, that women are always disadvantaged and never advantaged in every possible sphere in society. And the very popularity of that narrative is just yet another thing which biases voters towards women. They want to fight this perceived sexism that everyone knows will always exist and therefore always needs to be fought against without cares for updating empirical evidence.
Today there are even still people advocating for affirmative action favoring women in general admission to universities. Something that maybe made sense decades ago, but today women are already admitted more than men. History changes.