Mitt Romney gets a kick out of South Dakota Sen. John Thune's comments during a January rally in Dubuque, Iowa. Chip Somodevilla/Getty Images hide caption

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Chip Somodevilla/Getty Images

Does Sen. Thune Have The Right Stuff For Romney?

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New Jersey Gov. Chris Christie greets Republican presidential candidate Mitt Romney in Des Moines, Iowa, on Dec. 30, 2011. Evan Vucci/AP hide caption

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Evan Vucci/AP

As A VP Option, Christie's Star May Burn Too Hot

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Rep. Paul Ryan (left), R-Wis., and GOP presidential candidate Mitt Romney at a campaign stop in Appleton, Wis., on March 30. Steven Senne/AP hide caption

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Steven Senne/AP

Ryan Offers Romney Risk, Reward

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Former Arkansas Gov. Mike Huckabee delivers remarks to the Conservative Political Action Conference in February in Washington, D.C. Chip Somodevilla/Getty Images hide caption

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He's A Long Shot, But Don't Count Huckabee Out

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Louisiana Gov. Bobby Jindal checks out damage off Grand Isle, La., from the Deepwater Horizon oil spill in June 2010. Spencer Platt/Getty Images hide caption

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Spencer Platt/Getty Images

Jindal's Story Intrigues, But Can It Get Him A VP Nod?

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Former Minnesota Gov. Tim Pawlenty and GOP presidential candidate Mitt Romney campaign in Las Vegas on Oct. 17, 2011. Ethan Miller/Getty Images hide caption

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Ethan Miller/Getty Images

From Rival To Running Mate? Possible For Pawlenty

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Sen. Rob Portman, R-Ohio, campaigns with Mitt Romney in Cincinnati on Feb. 20. Mark Lyons/Getty Images hide caption

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Mark Lyons/Getty Images

Portman A Low-Key Possibility For GOP Running Mate

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Republican presidential candidate Mitt Romney stands with former Minnesota Gov. Tim Pawlenty during a campaign stop Saturday in Cornwall, Pa. Evan Vucci/AP hide caption

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