To be clear, Cain's advantage of high favorability mixed with low name-recognition is not simmilar to what Perry enjoyed during/before his honeymoon. Cain has long had better favorability numbers than ANY other Republican, as early as May. It really is enigmatic.
Nate Silver wrote 2 posts in May about Cain:
The Simple Case For Taking Herman Cain SeriouslyAnd
The Not-So-Simple Case For Taking Herman Cain SeriouslySome gems from May:
''In a field where the three insider favorites to win the race — Mitt Romney, Tim Pawlenty, and Jon Huntsman — collectively poll at just 25 percent, and where some Republicans seem to be pining for an outsider (perhaps even outside-the-box) choice, he’s the freshest face. Although his credentials as an elected official are obviously nonexistent, that also means he has less baggage to run from.''
''Candidates with electoral resumes as thin as Mr. Cain’s have very poor track records. But none of them have polling that was as impressive as Mr. Cain’s.
Candidates with polling that looks like Mr. Cain’s — with numbers in the high single digits or low double digits despite very low name recognition — have an exceptionally good track record. But all of them were far more credentialed than Mr. Cain.''
''In the post-reform primary era (1972 onward), there’s never really been a candidate that combined such limited name recognition, such underwhelming credentials — and such impressive polling.''