For the final time before the Jan. 3 Iowa caucuses, the seven men and women running for the Republican presidential nomination faced off on a debate stage.
Republican presidential candidates from left, former Pennsylvania senator Rick Santorum, Texas Gov. Rick Perry, former Massachusetts governor Mitt Romney, former House speaker Newt Gingrich, Rep. Ron Paul (R-Tex.), Rep. Michele Bachmann (R-Minn.), and former Utah governor Jon Huntsman arrive for a Republican presidential debate in Sioux City, Iowa. Chris Carlson/AP Buy Photo