Baruch, there are polls upon polls which are showing HUGE shifts over the past two weeks. Not your average post-convention bounces, mind you--these are 20+ point shifts in demographics where people don't typically make up their minds until the week before the election, sometimes not even until they're in the voting booth.
NC is now FIRMLY in McCain's camp--so much so that Obama is pulling staff out of other states to try and stop the bleeding. States that would NEVER have been in play in 2004 are suddenly toss ups, like Minnesota and even California. Who knew, indeed?