November 6, 2012
President Barack Obama calls to thank volunteers in Wisconsin, at campaign office call center the morning of the 2012 election, Tuesday, Nov. 6, 2012, in Chicago. Carla Windhorst is seated next to the president. (AP Photo/Carolyn Kaster)
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Campaign 2012 packed frantic suspense to the finish Tuesday, with Vice President Joe Biden flying unannounced up next to Republican Mitt Romney in battleground Ohio even as voters across the country were deciding who would win the White House.