Ed Morrissey:
"Allahpundit wrote a lengthy piece about last night’s CNN poll, complete with some insightful commentary about the cross-tabs. If you missed it — and by the number of comments on the post, it doesn’t appear than many of you have — be sure to read it now. However, the sample data, as AP pointed out, lacked a few details, most prominent of which was the partisan split of the sampling. Given the inclination of media polls to use wildly unrepresentative D/R/I splits in their samples, the lack of transparency on that point is telling.
That might not be the biggest problem with the poll, though. Its biggest problem is … math. Reader Raymond O did some math and asked a rather interesting set of questions in an e-mail last night about how CNN did theirs. First, let’s start with the topline results, as reported by CNN: Obama 52%, Romney 43% among registered voters, 53/41 among all respondents. If that’s the case, then the number of respondents in the latter case voting for Obama should be 538, and the number supporting Romney 416....."
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