Not a Clinton supporter but my 2 cents: Her supporters like progressivism and are willing to turn a blind eye to the shenanigans. They aren't principled. At least not in a moral sense.
The most common answer that I hear: "It's time for a woman to be president."
I didn't know that genitals were a qualification for any job other than porn.
I'm not a Clinton supporter either, not even a Democrat, but my 2 cents: All the shenanigans really do seem to be mostly Republican bluster with no substance. While I personally am not happy with the entire email thing, that she's a lawyer acting with the power of the Secretary of State before the laws that made what she did illegal, I bet what she did was probably ethical, as in adhering to the letter of the law, at least enough to argue in court and show reasonable doubt. As for her supporters, I know plenty of Democrats and few Hillary supporters, but still they will vote for her if Bernie doesn't get the nomination because she is the lesser of two evils in our two party system, and while they are not happy with her, they sure as hell don't want Trump or Cruz to be President.