Americans head out to vote
Nevada votes
Credit: Getty Images
LAS VEGAS, NV - NOVEMBER 06: Election worker Susan Keller sets up directional signs before the polling station at the Clark County Fire Training Center opens on November 6, 2012 in Las Vegas, Nevada. Voting is underway in the battleground state of Nevada as President Barack Obama and Republican nominee former Massachusetts Gov. Mitt Romney remain in a virtual tie in the national polls. (Photo by David Becker/Getty Images)
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