Republican presidential candidate Mitt Romney arrives onstage early Wednesday morning in Boston, moments before conceding defeat in the 2012 presidential election. Emmanuel Dunand/AFP/Getty Images hide caption

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Mitt Romney talks to reporters on his campaign plane on Election Day. "I'm very proud of the campaign we've run," he said. "No campaign is perfect." Emmanuel Dunand/AFP/Getty Images hide caption

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Casino magnate Sheldon Adelson at the presidential debate between Mitt Romney and President Obama, in Denver on Oct. 3. Adelson invested millions in an effort to help elect Romney — but only after bankrolling a superPAC for former House Speaker Newt Gingrich in his anti-Romney Republican primary battle. Nicholas Kamm/AFP/Getty Images hide caption

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Mormons line up outside the historic Salt Lake Temple for an annual conference in April 2010. George Frey/Getty Images hide caption

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Tagg Romney, the eldest son of presidential candidate Mitt Romney, shakes hands with Barbara Irby at GOP headquarters in Lynchburg, Va., last month. Sam O'Keefe/AP, News & Daily Advance hide caption

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Republican presidential candidate Mitt Romney makes his case about Medicare during a briefing in South Carolina in August. Evan Vucci/AP hide caption

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Mitt Romney helps collect and pack donated goods for those affected by Hurricane Sandy, in Kettering, Ohio, on Tuesday. Emmanuel Dunand/AFP/Getty Images hide caption

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Republican presidential candidate Mitt Romney speaks about the Supreme Court ruling on health care in Washington on June 28. Charles Dharapak/AP hide caption

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Mitt Romney speaks Monday at a campaign event at Avon Lake High School in Avon Lake, Ohio. Tony Dejak/AP hide caption

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Mitt Romney greets supporters Sunday during a campaign rally in Findlay, Ohio. Justin Sullivan/Getty Images hide caption

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Republican presidential candidate Mitt Romney places a prayer note during a visit to the Western Wall in Jerusalem in July. Israel is one of the few foreign countries where residents have a clear preference for Romney over President Obama. Charles Dharapak/AP hide caption

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Alan Shull attends a job fair in Portland, Ore., on April 24. Rick Bowmer/AP hide caption

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A general view of the Aletsch Glacier on April 21, 2007, near Brig, Switzerland, the largest glacier in the Alps. Unseasonably warm weather with temperatures up to 77 degrees Fahrenheit across Switzerland let snow melt, even at Alpine altitudes. Johannes Simon/Getty Images hide caption

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Mitt Romney shakes hands with President Obama after their final debate Monday in Boca Raton, Fla. Eric Gay/AP hide caption

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Annual "Biketoberfest" participants ride along Beach Street in downtown Daytona Beach, Fla., in 2010. Daytona Beach Visitors Bureau hide caption

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U.S. Marines drive amphibious armored personnel carriers in the Philippines on Oct. 9, as part of the annual joint exercises with Philippine counterparts. Jay Directo/AFP/Getty Images hide caption

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Mitt Romney greets supporters at a campaign rally Wednesday in Chesapeake, Va. Emmanuel Dunand/AFP/Getty Images hide caption

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President Obama and GOP presidential nominee Mitt Romney sparred over birth control, among other things, at the second presidential debate Tuesday in Hempstead, N.Y. Carolyn Kaster/AP hide caption

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