A new InsiderAdvantage/Poll Position survey of likely registered voters indicates a steep decline for Mr. Obama. It shows Republican John McCain with the support of 56 percent of the respondents to Mr. Obama's 38 percent.
The poll of 506 registered likely voters, weighted for age, race, and gender, was conducted by telephone Wednesday evening and has a 4 percent margin of error.
The poll didn't offer a choice for Libertarian Bob Barr or Green Party nominee Cynthia McKinney, both of Georgia, but 2 percent of respondents indicated "other" as their choice, and 4 percent were undecided.
InsiderAdvantage CEO Matt Towery said the poll represents a major change from past surveys that had predicted a close race in the Peach State.
"The reason is simple: Obama lost serious ground in virtually every demographic," he said, especially among the youngest voters.
"Should (young voters) return to Obama and the African-American vote end up where we expect it to be, the race could be closer in November," Mr. Towery said. "But as of now Georgia is no longer a 'leans McCain' state. As of this survey, Georgia is in the McCain column."