November 05, 2009


One More Look at the 2009 Polls

Mark Blumenthal has a must-read look at the final polls from Tuesday's election.

"If what you care about most is predicting the winners, it is clear that the automated surveys provided a more accurate gauge of the outcome... But that said, consider that we count on polls to do much more than predict the outcome..."

"Automated polls have been maligned, unfairly in my view, as inherently 'unreliable.' Yet when it comes to predicting election outcomes they continue to prove, NY-23 aside, at least as reliable as surveys done by conventional means. In New Jersey this week, they were more accurate in predicting the winner. At the same time, however, it would be wrong to jump to the opposite conclusion and place inherently greater trust in all automated surveys, especially when used for purposes other than predicting election outcomes."

"All polls have their limitations. Rather than trying to divide them into two categories, 'reliable' and 'crap,' we might do better to try to understand their limitations and interpret the results we see accordingly."


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