Former House Speaker Newt Gingrich. Win McNamee/Getty Images hide caption

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Gingrich: Some 'Brand New Players' Might Emerge At GOP Convention
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Republican presidential candidate and former Massachusetts Gov. Mitt Romney at his victory party Tuesday in Schaumburg, Ill. Chip Somodevilla/Getty Images hide caption

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Ari Shapiro on 'Morning Editon'
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Republican presidential candidate Rick Santorum with supporters Tuesday night in Lafayette, La. Louisiana's primary is on March 24. Sean Gardner/Getty Images hide caption

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Mara Liasson on 'Morning Edition'
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