I agree that it's irksome to know that people think you're for Hillary just because you're a woman. I read people saying that about me often, and I'm not even for Hillary!
But... could you please not say "vagina" in the context of talking about why people are attracted to women candidates? I know it gets a laugh, but it doesn't help your candidate and it doesn't help the cause of women in politics to reduce women to a body part. It might work in a stand-up comic act, but Dunham seems to be appearing at official Hillary Clinton campaign events:
The campaign... promoted a chance for Iowa supporters to meet Dunham, raffling off a lunch date to supporters who signed up for the campaign’s text updates.... On Friday, Dunham traveled around New Hampshire with the World Cup-winning soccer superstar Abby Wambach, pitching Clinton as the best advocate for women and the best candidate for the White House.... The trips seemed aimed at young women, a seemingly natural fit for Clinton’s message....You wouldn't talk about male genitalia that way. You wouldn't casually drop a line about Trump — as if I just kind of walk like a zombie toward the biggest phallus — and think it was cute. I mean, it kind of works as a way to talk about the lizard-brain level of electoral politics. Jeez, maybe we should talk about it.
Oh, lord, now I'm having a flashback to "Let's take a closer look at Bill's carrot and Hillary's onion ring."