Snap surveys taken after the last of three televised debates with John McCain on Wednesday night gave the Democrat the edge in the encounter by margins of up to 30 percentage points.
“McCain was behind going in and he is behind coming out,” said John McIntyre, co-founder of RealClearPolitics.com, an election website.
Pollsters and analysts say Mr Obama is now so well ahead of his Republican rival that it would take an exceptional event for him to lose. In the battleground states that will decide the race for the White House, he has a lead even greater than in the national polls.
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