Against Hillary, it would be an interesting skeletons-in-the-closet contest.
With all her baggage, I don't see why anybody thinks she is a credible candidate.
It's because she's a 'Rat, and no one in the 'Rat party cares about that kind of stuff. Republicans, on the other hand, have the more conscientious folks who care about family values, and Newt would go over with them like a wet dish rag. It's a real difference in philosophies and ideologies, and the fact is that our candidates have to live to higher standards than the 'Rats to get elected.
The main difference is that a person with a conscience feels guilt and often communicates shame when someone brings up their past misdeeds. The sociopath, however, denies they ever took place; or if they did, that they really hurt anyone. Just making the comparison...