Enlarge Photo

Photo by: Chris Carlson

Republican presidential candidates, from left, Texas Gov. Rick Perry, former Massachusetts Gov. Mitt Romney, Rep. Michele Bachmann, R-Minn., and former Sen. Rick Santorum enter the hall for a Republican presidential candidate debate at the Reagan Library Wednesday, Sept. 7, 2011, in Simi Valley, Calif. (AP Photo/Chris Carlson)

Happening Now