In merely the latest in a series of extremely overt partisan gestures at CBS News, the “Early Show” yesterday touted a bad CBS poll of 178 “uncommitted” voters — which CBS elsewhere reported included some commmitted voters — that found Edwards won the VP debate by 12 points. The problem is the sample is so small that the margin of error is plus or minus 7 points, in this case, a statistical tie. Not that CBS reported it that way. One colleague said to me: “you’d get flunked in college trying to do this kind of a poll for class.”