U.S. Citizens Head To The Polls To Vote In Presidential Election

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Political signs dot the landscape along a highway November 6, 2012 in... News PhotoCity Street,Democracy,Election,Highway,Horizontal,Iowa,Madison County - Iowa,Politics,Rural Scene,Sign,Spotted,USAPhotographer Collection: Getty Images News 2012 Getty ImagesEARLHAM, IA - NOVEMBER 6: Political signs dot the landscape along a highway November 6, 2012 in Madison County near Earlham, Iowa. As Americans go to vote, President Barack Obama and Republican nominee former Massachusetts Gov. Mitt Romney remain in a virtual tie in the national polls. (Photo by Steve Pope/Getty Images)