What a Democrat will need to do to score a surprise victory in the Iowa caucuses

The quadrennial tradition of everyone in politics becoming an expert on the Iowa Caucus has begun.  Anyone with a twitter account seems to know everything about anything to do with the first-in-the-nation caucus state, with the latest fixation declaring who will surprise and be the “Democrats’ Rick Santorum.”  But before we start making this comparison, a history lesson is in order.

Despite being a former congressman and former member of the U.S. Senate leadership from one of the most coveted swing-state electoral prizes, Santorum was a footnote in political stories when he announced his 2012 campaign.

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