Republican presidential candidate Mitt Romney pauses during a visit to St. Paul's Lutheran Church while campaigning in Berlin, N.H., on Dec. 22.
Charles Krupa/AP
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Then-Sen. John F. Kennedy participates in a question-and-answer session with the Ministers' Association of Greater Houston on Sept. 12, 1960, in Houston. In a speech to the group, Kennedy addressed concerns about his Catholicism and his run for the presidency.
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Former Massachusetts Gov. Mitt Romney shakes hands at a campaign rally at Capital University in Bexley, Ohio, on Wednesday.
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Mitt Romney narrowly won in Michigan Tuesday night. For Super Tuesday, he'll set his sights on Ohio, Massachusetts, Vermont and Virginia.
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Republican Presidential candidate Ron Paul celebrates the "leap day" birthday of his wife Carol, left, during a rally Tuesday in Springfield, Va.
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Republican presidential candidate Mitt Romney waves to supporters Tuesday during a primary night gathering at the Suburban Collections Showplace in Novi, Mich.
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Leap day is the perfect moment to contemplate time. Here a man looks at the Seine river through the giant clock of the Orsay Museum in Paris.
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