Obama picks up second debate win, poll says

NASHVILLE, Tennessee (CNN) -- A national poll of debate watchers suggests that Sen. Barack Obama won the second presidential debate. Fifty-four percent of those questioned in a CNN/Opinion Research Corp. survey conducted after the debate ended said that Obama did the best job in the debate, with 30 percent saying Sen. John McCain performed better.

According to the poll, 64 percent had a favorable opinion of Obama after the debate, up four points from before the event. Fifty-one percent of those polled had a favorable opinion of McCain after the debate unchanged from before its start.

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