The 2012 U.S. presidential election campaign finally comes down to election day and a handful of battleground states that will decide whether Barack Obama gets another four years in office or Mitt Romney replaces him. Romney led Obama 76 electoral votes to 64, as agencies called races in 16 states and the District of Columbia. But no races had been decided in the nine swing states likely to decide the election. The swing states — those that are not predictably Democratic or Republican — were pulling outsized attention Tuesday night because the president is chosen in a state-by-state tally of electors, not according to the nationwide popular vote.

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