Supporters listen as US President Barack Obama speaks during a campaign event at the Palm Beach County Convention Center in West Palm Beach, Florida, on September 9, 2012. A CNN/ORC survey of likely

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Supporters listen as US President Barack Obama speaks during a campaign event at the Palm Beach County Convention Center in West Palm Beach, Florida, on September 9, 2012. A CNN/ORC survey of likely voters gave Obama 52 percent of the vote compared to 46 percent for Romney, who also fell behind in August in terms of fundraising, the first time he has trailed in the cash race since April.

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