A Palm Beach County election worker counts ballots in Riviera Beach, Fla., on Nov. 9. Rep. Allen West contested the results of the election in Florida's 18th District for two weeks before conceding. Since 2000, the number of contested elections has more than doubled. J Pat Carter/AP hide caption

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Welcome to Arkansas ... will it apply to the GOP on Election Day? Republicans haven't had control over both state legislative chambers since 1874. Fotosearch/Getty Images/Fotosearch RF hide caption

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Early voters waited in line Wednesday in Miami. Joe Raedle/Getty Images hide caption

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President Barack Obama (R) debates with Republican presidential candidate Mitt Romney (L) as moderator Bob Schieffer listens on Oct. 22, 2012. Win McNamee/Getty Images hide caption

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Democrat Richard Carmona (left) and Republican Rep. Jeff Flake shake hands before Thursday's debate in Chandler, Ariz. Ross Franklin/AP hide caption

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Former Maine Gov. Angus King, an independent candidate for the U.S. Senate, greets potential voters Oct. 1 in Bath, Maine. Joel Page/AP hide caption

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Republican presidential nominee Mitt Romney and President Barack Obama shake hands at the first presidential debate at the University of Denver, Wednesday. Charlie Neibergall/AP hide caption

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Iowa Supreme Court Justice David Wiggins, right, faces a retention vote Nov. 6. Charlie Neibergall/AP hide caption

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