@blatham,
Now you seem to be suggesting that the consideration of "likability" in a political contest is somehow sexist.
And yet likability has been a factor in presidential elections before any women ran for the office.
You will have to ask the people who don't consider Clinton likable which of her traits have led them to such an assessment.
For me they are her mendacity, her humorlessness, her vindictiveness, her conceit, and her cackling laugh. The very same traits that would, in my estimation, render a male candidate unlikable.
Her absurd fashion sense makes her laughable as it would if it was shared by a male candidate. To some degree she is, in this sense, at a disadvantage to a male candidate. It should not be difficult for a male candidate to limit his campaign and public function wardrobe to grey and navy suits accompanied by white shirts and red or blue neckties. There must be a feminine equivalent of such a wardrobe, but the wearer would likely receive some criticism for a dull wardrobe, whereas her male counterpart would likely not. However it is as easy for a female candidate, as it is for a male one, to delegate her garment selection to a fashion expert, so the only true disadvantage that might remain would be do to ego, not gender.