Former Minnesota Gov. Tim Pawlenty speaks during the Iowa Republican Party's Straw Poll on Saturday, Aug. 13, 2011, in Ames, Iowa. (AP Photo/Charlie Neibergall)

Photo by: Charlie Neibergall

Former Minnesota Gov. Tim Pawlenty speaks during the Iowa Republican Party's Straw Poll on Saturday, Aug. 13, 2011, in Ames, Iowa. (AP Photo/Charlie Neibergall)