While it appears that Cain’s numbers have been dented by the recent allegations against him, the damage is far from terminal. If no more claims surface, and if the media decides to head off in another direction, Cain could well brush off the allegations. If he won the nomination, however, there would undoubtedly be fresh scrutiny, and that might be something that concerns voters.
The real story from the CBS poll is the relatively strong performance of Newt Gingrich. And given the troubles that have afflicted his rivals, Mitt Romney must surely be concerned by the fact that, despite being just about the only candidate to make no big gaffes, his own campaign is still not really taking off with voters.