Republicans campaign in Deep South

Associated Press
Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets supporters who braved the rain during a campaign stop at the Whistle Stop Cafe, Monday, March 12, 2012 in Mobile, Ala. (AP Photo/ John David Mercer)

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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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