Rasmussen sees a statistically insignificant but persistent lead over McCain nationally, led by unaffiliated voters:
One key to this changing dynamic is that Obama now leads McCain among unaffiliated voters by nine percentage points. McCain is supported by 81% of Republicans, Obama by 70% of Democrats.
Once Clinton is finally dispatched, it's hard to see Obama's Democratic support being lower than McCain's GOP backing. This contest will be for independents and leaners. Which can only be good for this excessively polarized country.
By the way, Rasmussen just dropped their Obama-Clinton tracking poll.