Rick Santorum

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Members of the audience listen as Republican presidential hopefuls Rick Perry, Rick Santorum, Mitt Romney, and Newt Gingrich speak at a Presidential Debate at the Myrtle Beach Convention Center. (Andrew Harnik / The Washington Times)

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Republican Presidential hopefuls Rick Santorum, left, and Mitt Romney, right, argue with each other at a Presidential Debate. (Andrew Harnik / The Washington Times)

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Members of the audience listen as Republican presidential hopefuls Rick Perry, Rick Santorum, Mitt Romney, and Newt Gingrich speak at a Presidential Debate at the Myrtle Beach Convention Center. (Andrew Harnik / The Washington Times)

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Members of the audience listen as Republican presidential hopefuls Rick Perry, Rick Santorum, Mitt Romney, and Newt Gingrich speak at a Presidential Debate at the Myrtle Beach Convention Center. (Andrew Harnik / The Washington Times)

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Republican Presidential hopefuls Rick Perry, Rick Santorum, Mitt Romney, Newt Gingrich, and Ron Paul prepare at their podiums before a Presidential Debate. (Andrew Harnik / The Washington Times)

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Republican Presidential hopefuls Rick Perry, Rick Santorum, Mitt Romney, Newt Gingrich, and Ron Paul take the stage at a Presidential Debate on Monday, January 16, 2012.(Andrew Harnik / The Washington Times)

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Republican presidential hopefuls Rick Perry, Rick Santorum, Mitt Romney, Newt Gingrich and Ron Paul take the stage at a debate held by the South Carolina Republican Party, Fox News Channel, The Wall Street Journal and Twitter at the Myrtle Beach Convention Center, Myrtle Beach, S.C., Monday, Jan. 16, 2012. (Andrew Harnik/The Washington Times)

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Republican Presidential hopefuls Rick Perry, Rick Santorum, Mitt Romney, Newt Gingrich, and Ron Paul take the stage at a Presidential Debate at the Myrtle Beach Convention Center. (Andrew Harnik / The Washington Times)

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Republican Presidential hopefuls Rick Perry, Rick Santorum, Mitt Romney, and Newt Gingrich take the stage at a Presidential Debate held by The South Carolina Republican Party, Fox News Channel, The Wall Street Journal, and Twitter at the Myrtle Beach Convention Center, Myrtle Beach, SC, Monday, January 16, 2012. (Andrew Harnik / The Washington Times)

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J.C. Watts, a Gingrich national co-chairman, calls social conservatives' endorsement of Rick Santorum in Texas "misleading." (Associated Press)

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Republican presidential candidate Rick Santorum speaks to members of the South Carolina Tea Party Coalition at the Springmaid Beach Resort, Myrtle Beach, SC, Myrtle Beach, SC, Monday, January 16, 2012.(Andrew Harnik / The Washington Times)

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Republican presidential candidate Rick Santorum, right, sits with his wife Karen Garver Santorum as he is introduced to speak to members of the South Carolina Tea Party Coalition at the Springmaid Beach Resort, Myrtle Beach, SC, Myrtle Beach, SC, Monday, January 16, 2012.(Andrew Harnik / The Washington Times)

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Republican presidential candidate Rick Santorum holds up one of his sweater vests which he has become famous for wearing as he and his wife Karen Garver Santorum speak to CafeMomâ€™s Moms Matter 2012, a group of politically active South Carolina mothers at Fresh Brewed Coffee House, Myrtle Beach, SC, Monday, January 16, 2012.(Andrew Harnik / The Washington Times)