Poll: Obama holding on to national advantage

After a string of surveys that seemed to indicate John McCain was reducing Barack Obama’s polling edge, the most recent numbers suggest the Democratic nominee is holding on to his advantage nationally.

A new CNN Poll of Polls compiled Thursday evening indicates that 50 percent of likely voters are backing Sen. Obama for president, with 43 percent supporting Sen. McCain and 7 percent undecided.

The previous poll of polls, compiled earlier Thursday, suggested that Obama held a 5 point lead over McCain and the race was tightening.

Polling has also suggested the Democrats are making a late play for Arizona, McCain’s home state.

Both candidates have continued to push hard in swing states, McCain concentrating on Ohio and Obama joining forces with Bill Clinton in Florida.

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On the day Exxon Mobil set a quarterly profit record for a U.S. company, saying its third-quarter net profit was $14.83 billion, McCain accused Obama of working on the side of the oil industry.

“Sen. Obama voted for billions in corporate giveaways to the oil companies. I voted against it. When I am president, we are not going to let that happen,” he said in Defiance, Ohio.

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