Which Polls Fared Best (and Worst) in the 2012 Presidential Race - NYTimes.com:
"As Americans’ modes of communication change, the techniques that produce the most accurate polls seems to be changing as well. In last Tuesday’s presidential election, a number of polling firms that conduct their surveys online had strong results. Some telephone polls also performed well. But others, especially those that called only landlines or took other methodological shortcuts, performed poorly and showed a more Republican-leaning electorate than the one that actually turned out."
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