Ben Smith has an interesting piece about the subset of people with racist views who nonetheless support Obama:
“What you see is it’s perfectly possible to hold a negative view of at least one aspect of African-Americans and yet simultaneously prefer Obama,” said Charles Franklin, a political scientist at the University of Wisconsin-Madison. “Racial feelings are not as cut and dried — not as black and white — as people often say.”
Franklin explored those contradictions in a large, national survey taken in mid-September, when the Illinois Democratic senator's rival, Sen. John McCain (R-Ariz.), led in many polls and the nation’s economic woes had not yet produced a deep crisis. The poll asked voters whether they agreed with the statement that “African-Americans often use race as an excuse to justify wrongdoing." About a fifth of white voters said they “strongly agreed.” Yet among those who agreed, 23 percent said they’d be supporting Obama.
“This result is reasonable if you believe that race is not as monolithic an effect as we might easily assume,” Franklin said, noting that 22 percent of those who "strongly disagreed" said they'd be supporting McCain.
Obviously that logic becomes even more compelling after a month of terrible economic news. See, for example, this nugget:
One Obama volunteer told Politico after canvassing the working-class white Philadelphia neighborhood of Fishtown recently, "I was blown away by the outright racism, but these folks are … undecided. They would call him a [racial epithet] and mention how they don't know what to do because of the economy.”