BLACK AND WHITE VERSION US Republican Presidential candidate Mitt Romney walks towards his campaign plane after a rally at Lynchburg regional airport in Lynchburg, Virginia, on November 5, 2012. After a grueling 18-month battle, the final US campaign day arrived for President Barack Obama and Republican rival Mitt Romney, two men on a collision course for the world's top job. The candidates have attended hundreds of rallies, fundraisers and town halls, spent literally billions on attack ads, ground games, and get out the vote efforts, and squared off in three intense debates.   AFP PHOTO/Emmanuel DUNAND Photo: EMMANUEL DUNAND, AFP/Getty Images / 2012 AFP
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