Cain's Exit Leaves Two-Man Race

    Clockwise from top left, Republican presidential candidates former Gov. Mitt Romney, Texas Gov. Rick Perry, Rep. Ron Paul, former Rep. Rick Santorum, Rep. Michelle Bachmann, and former Rep. Newt Gingrich appear on a split screen after they appeared on the Republican Presidential Forum on "Huckabee," the Fox News program hosted by former Arkansas Gov. Mike Huckabee, Saturday, Dec. 3, 2011 in New York.  (AP Photo/Henny Ray Abrams)

    Henny Ray Abrams / AP Photo

    With the exit of Herman Cain, the GOP presidential field has narrowed to a race between Newt Gingrich and Mitt Romney. Gingrich is showing strength in Iowa, the location of the first caucuses, and Romney is strong in New Hampshire, the first primary. Both were participating in a Fox News forum hosted by former Arkansas governor Mike Huckabee, and faced tough questions posed by three conservative state attorneys general. Gingrich was pressed to promise that he would not "advance these sorts of big-government approaches" that he had pushed for in the past as House speaker, and Romney was asked about his health-care overhaul when he was governor of Massachusetts, with one A.G. saying there weren't many differences between "Obamacare" and Romney's approach.

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