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Dozens of televisions display a political advertisement with the image of former President Ronald Reagan at the American furniture electronics and appliances store December 27, 2011 in Urbandale, Iowa. With the Iowa Caucuses a week away, the Republican candidates and their super PACs have spent $10 million on television and radio spending in Iowa this month. Texas Governor Rick Perry leads the pack with $2.86 million in December alone.
Republican super PACS are watching the presidential polls closely because how their nominee Mitt Romney does will determine where they will put their money.
Which races will they invest in, and why?
Bill Allison, of the non-partisan Sunlight Foundation.