The latest poll was taken from 10/27 - 11/7 and the values only add up to 70%. Obviously they didn’t poll leaners, which came directly off of Cain and Gingrich’s numbers. I don’t know that Cain has a 10 point lead, but the internals on Rasmussen are much stronger: one day sample (true snapshot), larger sample, a higher percentage of results (values add up to 89%). I don’t know the historical accuracy of Clemson’s polls, but it looks like garbage on the surface.
I missed post 54 earlier. I totally agree with your analysis. The Clemson poll isn’t directly comparable to any of the other polls. The next few SC polls will tell the tale.