IMO Cain was a breath of fresh air, a perfect outsider with successful business credentials and very good communications skills.
Those who say he quit therefore must be guilty suffer from severe cranial-anal syndrome in not seeing this pattern.
The latest example is ron paul. He never should have even been in serious contention but as the other candidates ran out it is now his turn. Now the smear machine is revealing his past. Jeez in his case all you have to do is see his present to realize he is not all there.
IMO we never vetted his business career and his communication skills were questionable.
I will admit he was a good carnival barker.