The Democratic candidate is always weak among white voters. You may as well give a poll pointing out that McCain is going to get creamed among black voters.
Since 1968, no Democratic candidate has won a majority of white voters. Most, if not all, has won a majority of the white Democratic voters. Obama is in real danger of losing that group in the Fall, or at least, not carrying it strongly enough to win in the Fall. The campaign didn't start out that way, but since March, it's been drifting that direction. It's actually gotten worse since then.
You're delusional if you think that Obama won't win the majority of white Democrats in November. He'd have to lose 70-30 not to.
