(CBS) Democratic presidential nominee Barack Obama leads GOP rival John McCain 49 percent to 40 percent among registered voters in a new CBS News poll. The nine-point spread marks an increase of four percentage points in Obama's lead from a CBS News/New York Times survey taken last week. Obama also leads by nine points among likely voters, 50 percent to 41 percent.
About 1 in 4 voters remains uncommitted to either candidate - they are either undecided or favor one candidate but say they could change their mind.
While no single factor can account for Obama's increased lead, both the financial crisis and the first presidential debate may have benefited the Democratic presidential nominee.
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Most voters said the debate did not change their opinion of the candidates, but Obama fared better amongst those who did. Twenty-eight percent of those surveyed said their opinion of Obama changed for the better, more than twice the percentage who said the same of McCain. While 17 percent said their opinion of McCain got worse, meanwhile, just 6 percent said as much of his rival.
Obama’s voters continue to be more enthusiastic than McCain’s voters about their candidate, and their enthusiasm has increased in the last week. Sixty-one percent of Obama voters are enthusiastic about the Illinois senator, up eight points from last week, while 36 percent of McCain backers are enthusiastic about their candidate.
Obama's favorable rating has risen five points from last week, to 48 percent, while his unfavorable rating is 32 percent. McCain's favorable rating is 39 percent and his unfavorable rating is 42 percent, an increase of 7 points from last week.
McCain’s support appears softer than Obama’s. Twenty-one percent of McCain voters say it is too soon to say for sure who they will vote for, compared to 14 percent of Obama voters.
Opinions of Republican vice presidential nominee Sarah Palin are now evenly divided, with her unfavorable rating (33 percent) now slightly higher than her favorable rating (32 percent). Last week, Palin had an eight point net positive rating. Democratic vice presidential nominee Joe Biden's favorable rating stands at 34 percent and his unfavorable rating at 19 percent.
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http://www.cbsnews.com/stories/2008/10/01/opinion/polls/main4491938.shtml