Republicans campaign in Deep South

Associated Press
Republican presidential candidate, former Pennsylvania Sen. Rick Santorum, and his wife Karen, make a campaign stop at McElroy's On the Bayou, Monday, March 12, 2012, in Ocean Springs, Miss.  (AP Photo/Eric Gay)

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Republicans Rick Santorum, Newt Gingrich and Mitt Romney battle for conservative support in Mississippi and Alabama ahead of presidential primaries Mar. 13. Polls show it has turned into a tense three-way tie.

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