Rep. Michele Bachmann, Minnesota Republican, greets a group of supporters as she emerges from her campaign bus after winning the Iowa Republican Party's Straw Poll in Ames, Iowa, on Saturday, Aug. 13, 2011. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

Rep. Michele Bachmann, Minnesota Republican, greets a group of supporters as she emerges from her campaign bus after winning the Iowa Republican Party's Straw Poll in Ames, Iowa, on Saturday, Aug. 13, 2011. (AP Photo/Charles Dharapak)