It's more than just being polarizing, she's a horrible speaker, has no political instinct, and she's way too dogmatic. Other than that she's perfect.
Remember the way a different Al Gore appeared in all of the three debates with Bush? He tried one persona, then another, then another-—basically multiple personalities to see which one would work. Well, none of them did. Say what you will about Bush, but the fact that he came across as the SAME PERSON in every debate was a nearly subliminal thing that helped him win. Hillary veers between folksy-with-a-smile-and-a-laugh in her voice, and some kind of automaton who can’t help talking down to her audience of “would-be voters” she’s not sure she’s convinced yet, and finally, a down-home homegirl with an affected country accent as she did so embarrassinly a few weeks ago to the black audience, who apparently ate it up.
Either way, she doesn’t come across as an integrated personality. That will do her in.