Mitt Romney

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With less than a week before the nation's first presidential primary, former Massachusetts Gov. Mitt Romney arrives on a GOP presidential campaign stop at Manchester Central High School in Manchester, N.H., on Wednesday, Jan. 4, 2012. (Rod Lamkey Jr./The Washington Times)

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Republican presidential candidate and former Massachusetts Gov. Mitt Romney (left), accompanied by Sen. John McCain, Arizona Republican, campaigns Jan. 4, 2012, during a town hall style meeting in Manchester, N.H. (Associated Press)

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**FILE** Sen. John McCain (right), Arizona Republican, answers questions on stage June 4, 2010, as he is joined by former Massachusetts Gov. Mitt Romney during a town hall meeting in Mesa, Ariz. (Associated Press)

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Republican presidential candidate and former Massachusetts Gov. Mitt Romney takes the stage Jan. 3, 2012, with his wife Ann at his caucus night rally in Des Moines, Iowa. (Associated Press)

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Former Massachusetts Gov. Mitt Romney greets supporters at his caucus night rally in Des Moines, Iowa, on Tuesday, Jan. 3, 2012. (AP Photo/Charles Dharapak)

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Republican presidential candidate Mitt Romney and his wife Ann introduce their family including four of their five sons, Taggart, Matthew, Joshua, and Craig during an early morning rally at the Temple for Performing Arts on the day of the Iowa caucus, Des Moines, IA, Tuesday, January 3, 2012. (Andrew Harnik / The Washington Times)

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Republican presidential candidate Mitt Romney holds an early morning rally at the Temple for Performing Arts on the day of the Iowa caucus, Des Moines, IA, Tuesday, January 3, 2012. (Andrew Harnik / The Washington Times)

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Republican presidential candidate Mitt Romney holds an early morning rally at the Temple for Performing Arts on the day of the Iowa caucus, Des Moines, IA, Tuesday, January 3, 2012. (Andrew Harnik / The Washington Times)

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Republican presidential candidate Mitt Romney holds an early morning rally at the Temple for Performing Arts on the day of the Iowa caucus, Des Moines, IA, Tuesday, January 3, 2012. (Andrew Harnik / The Washington Times)

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Workers for Republican presidential candidate Mitt Romney, Karl Beckstein (left) Chandler Thornton (center) and Matt Kirincic talk near a hand made "Earn it" sign at the New Hampshire campaign office in Manchester, NH. (Rod Lamkey Jr/ The Washington Times)

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Republican presidential candidate Mitt Romney holds an early morning rally at the Temple for Performing Arts on the day of the Iowa caucus, Des Moines, IA, Tuesday, January 3, 2012. (Andrew Harnik/The Washington Times)

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Republican presidential candidate Mitt Romney and his wife, Ann, introduce their family including four of their five sons, Taggart, Matthew, Joshua, and Craig during a Tuesday rally at the Temple for Performing Arts in Des Moines, Iowa. Mr. Romney hopes the state's GOP caucus results will strongly launch his nomination bid. (Andrew Harnik/The Washington Times)

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Newt Gingrich ditched his "high road" campaign Tuesday, calling Mitt Romney a liar as the presidential contest shifted to upcoming contests in New Hampshire, South Carolina and Florida. A PAC supporting Mr. Romney has been running anti-Gingrich ads. (Associated Press)

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Republican presidential candidate and former Massachusetts Gov. Mitt Romney greets residents Jan. 3, 2012, during a caucus day rally at the Temple for Performing Arts in Des Moines, Iowa. (Associated Press)

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** FILE ** Volunteers Jason Bassett, of Des Moines, Iowa, left, and Mark Hancock, of Windsor Locks, Conn., right, work at Republican presidential candidate, former Massachusetts Gov. Mitt Romney's campaign headquarters, Friday, Dec. 30, 2011, in Des Moines, Iowa. (AP Photo/Charlie Neibergall)

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Republican presidential hopeful Mitt Romney is hoping to improve on his second-place finish in Iowa's caucuses four years ago by starting his second presidential campaign with a win in the state Tuesday. (Associated Press)

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Republican presidential candidate and former Massachusetts Gov. Mitt Romney arrives Jan. 1, 2012, for a campaign appearance at the Bayliss Park Hall in Council Bluffs, Iowa. (Associated Press)

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FRONT-RUNNER: Republican presidential hopeful Mitt Romney took the lead in the final pre-caucus Des Moines Register poll, garnering 24 percent of the vote. "I can't tell you who's going to win this thing, but I do believe I'm going to have a great deal of support," Mr. Romney said. (Andrew Harnik/The Washington Times)

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Supporters of Republican presidential candidate, former Massachusetts Gov. Mitt Romney listen during a campaign stop, Saturday, Dec. 31, 2011, in Le Mars, Iowa. (AP Photo/Eric Gay)

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Republican presidential candidate, former Massachusetts Gov. Mitt Romney prepares to sign a newspaper with the headline "Obama's History!" during a campaign stop at Old Salt Restaurant in Hampton, N.H. Dec. 31, 2011. (AP Photo/Winslow Townson)