My ex would fit this 'swing-voter' description better than anyone I know. White, intelligent, divorced, professional female... doesn't really care for the Clinton's but just might vote for HRC only because of her gender. Politics wouldn't really enter her mind if it came down to The Beast versus a Republican... she would simply vote for the female.
Scary.
A bit of anecdotal evidence. Someone told me just today that she overheard a professional woman, the president of some liberal feminist organization no less, state flatly that she would never vote for hillary clinton for president.
And here's the punch line: She said she wouldn't vote for hillary precisely because she is a woman!