Texas Gov. Rick Perry speaks at the Conservative Political Action Conference this month in Orlando, Fla. The next day, he finished a disappointing second in the Florida GOP straw poll. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

Supporters of Republican presidential candidate Rick Perry attend a rally earlier this month in Newport Beach, Calif. Though some Republican voters have doubts about Perry, recent polls show it's not because of his stance on Social Security, which he's called a "Ponzi scheme." Kevork Djansezian/Getty Images hide caption

itoggle caption Kevork Djansezian/Getty Images

Texas Gov. Rick Perry waves to the crowd after speaking at an anti-abortion rally on the Capitol steps in Austin on Jan. 23, 2010. Jack Plunkett/AP hide caption

itoggle caption Jack Plunkett/AP

Republican presidential candidates (from left) Rep. Michele Bachmann, former Massachusetts Gov. Mitt Romney and Texas Gov. Rick Perry cover their hearts during the playing of the national anthem before a Republican presidential debate on Sept. 12. Chris O'Meara/AP hide caption

itoggle caption Chris O'Meara/AP

Mike Toomey (foreground), former chief of staff to Texas Gov. Rick Perry, watches primary election returns with other staffers in Austin in 2006. Harry Cabluck/AP hide caption

itoggle caption Harry Cabluck/AP

A large earth-mover carries PCB-contaminated soil from the Hudson River in New York to a burial pit at Waste Control Specialists near Andrews, Texas, in October 2009. Betsy Blaney/AP hide caption

itoggle caption Betsy Blaney/AP

Republican presidential candidate Rick Perry speaks at the Vines Center on the campus of Liberty University in Lynchburg, Va., on Wednesday. Jill Nance/AP hide caption

itoggle caption Jill Nance/AP

Republican presidential candidate former Massachusetts Gov. Mitt Romney (left) passes behind Texas Gov. Rick Perry during a break in a Republican debate Monday in Tampa, Fla. Mike Carlson/AP hide caption

itoggle caption Mike Carlson/AP

Texas Gov. Rick Perry (right) takes the stage with Mitt Romney and Rep. Michele Bachmann before Wednesday night's GOP presidential debate at the Ronald Reagan Presidential Library in Simi Valley, Calif. David McNew/AFP/Getty Images hide caption

itoggle caption David McNew/AFP/Getty Images

The stage where Gov. Rick Perry gathered with supporters on election night in 2010. Ben Sklar/Getty Images hide caption

itoggle caption Ben Sklar/Getty Images

Texas Gov. Rick Perry addressed the Veterans of Foreign Wars 112th National Conference on Aug. 29. He'll participate in his first presidential debate this week. Eric Gay/AP hide caption

itoggle caption Eric Gay/AP

Republican presidential hopeful Texas Gov. Rick Perry (left) shakes hands with a supporter as he goes onstage at the Polk County GOP summer picnic event held at the Iowa State Fairgrounds in Des Moines on Saturday. Nati Harnik/AP hide caption

itoggle caption Nati Harnik/AP