President Obama and Mitt Romney battled for momentum heading into the final weekend before Tuesday's election. The GOP nominee made a last-minute pitch in Pennsylvania, hoping to snatch a major trove of electoral votes from Obama. The president launched a whirlwind tour that will take him to four swing states on Saturday alone. Obama got a boost by an endorsement from New York City's independent Mayor Michael Bloomberg just as polling showed Romney gaining support among independents, and the Obama campaign aired an ad touting the support of Colin Powell, a prominent Republican. After a three-day hiatus due to Hurricane Sandy, both sides turned up the heat, with Romney saying he offered "real change" and Obama countering by saying, "I know what real change looks like, because I fought for it." Despite a long campaign, the candidates are going into the vote within decimal points of each other in the polls.
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