Polls from the last few weeks have shown Cain blowing Romney away in both Iowa and South Carolina. I’m very suspicious of this poll.
Sounds like a bias in the system. As a geek, I can definitely testify to the arduous task it would be to get a poll right. To get a poll right you don’t need huge numbers of sample subjects. The trouble comes in chasing them all down. These are all phone polls and various important demographic factors influence whether the person will even answer the phone or give a candid response to your poll.