In the book Freakonomics by Steven Levitt and Stephen J. Dubner, the authors discuss polls and racism. When white citizens are asked their opinions about a black candidate, they will often lie to pollsters, saying they will vote for the black candidate, so that they will appear "color-blind" to the pollsters. In the privacy of the voting booth however, where no one can see their vote, they will then cast their ballot for the other (supposedly white) candidate.
In other words, either conscious or unconscious racism prevents many whites from voting for a black candidate, even though they claimed that race didn't matter in their choice.
With apparent race-based prejudice from both blacks and whites against Obama, is it possible that the polls as we see them now are inflated for Obama? Could it be that this fall's Presidential election will be much different than we have been led to expect by the polls and the media? Could a whole lot of people who claim to support Obama now secretly vote against him in November? (In addition to all of those voters who are against Obama for purely political, philosophical or issue-related reasons.)
Something to think about.