I heard it from a local radio news item. I looked it up:
Washington Post-ABC News Poll
Responants who identified themselves as democrats were 38%, republican 28%. Of the remaining 34%, 46% lean democrat and 28% lean republican. That makes a total 54% democrat vs. 38% republican, yet Obama only gets a 52% and McCain gets a 42%... Adjust those to the nominal voters of 45%/45%/10%other and you get McCain 50%, Obama 44%!
Think about what that means, and other details within the poll.
You will find that most polls are not as reported by the leftist media when you read all the internal details.