Workers at TPI Composites look on during a campaign stop by Gov. Rick Perry. (Aaron P. Bernstein)
Republican presidential candidate and former U.S. Senator Rick Perry gearing up for his Iowa Caucus night rally in Des Moines, Iowa, January 3, 2012. (Samantha Sais)
A young boy prepares to leave school before the arrival of voters at the Waukee Precinct 4 GOP Caucus held at Walnut Hills Elementary School January 3, 2012 in Urbandale, Iowa. After months of campaigning by candidates, Iowan voters throughout the state prepare to participate in the first caucus of the 2012 presidential election. (Jonathan Gibby)