This combo of file photos shows the candidates on the ballot for the Aug. 13, 2011 Republican straw poll in Iowa. The candidates are, top row from left: Michelle Bachmann, Herman Cain and Newt Gingrich; middle row from left: Jon Huntsman, Thaddeus McCotter and Ron Paul; and bottom row from left: Tim Pawlenty, Mitt Romney and Rick Santorum. (AP Photo, File)