No, at least not openly.
But I do know a bunch of people who are supporting her just because she's a woman, and they are very open about it.
Which is as stupid as opposing her because of gender.
Eh, it's slightly less ridiculous to support a candidate because you believe her election will lead to greater equality for women than it is to oppose a candidate because 'A WOMAN'S PLACE IS IN THE HOME YOU GUYS!' At least the goal is admirable, even if the rationale is seriously flawed.
I beg to differ. Supporting a candidate because she's a woman is just as bad as supporting a candidate because he's a man.
If you think that she's identical to Sanders on every other issue, or all the issues that you care about, or they disagree with you on an equal number of issues (e.g. "I like Clinton's position on guns but I like Sanders's position on health care") then I guess gender could serve as a nice "tiebreaker."
However, I honestly doubt there are any people who say "I agree with Sanders's positions more on every issue, I think he would be a very competent President, and he's by far the more electable candidate, but I'm voting for Clinton because she's a woman." People who say that almost always have some other reason they support Hillary, and are just listing her gender as one of the things they like about her.