The Secrets of the 2012 Campaign

…  The Romney campaign was shocked on election night. Advisers had predicted that Romney would win decisively. That confidence was based largely on their polling, which was based on a generous interpretation of the electorate.

The Obama campaign, by contrast, had several different streams of polling information coming in. [cont.]

John Dickerson, Slate

See also: Institute of Politics 2012 Campaign Decision Makers Conference