Making Sense Of Presidential Polls

In less than a month, the 2012 presidential election turned from an almost certain victory for President Obama to a neck-and-neck race. New York Times blogger and statistician Nate Silver and Princeton neuroscientist Sam Wang talk about making sense of the polls?and why not all votes are created equal.

Source: http://www.npr.org/2012/10/19/163245520/making-sense-of-presidential-polls?ft=1&f=1007

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