Think I am a racist for suggesting that? Fine with me. But whether or not this author is racist (a charge I'd reject; being honest about race doesn't equal being racist), doesn't change the racial nature of the votes in virtually every recent primary state. Sure, whites also voted for Obama, but the point is, how many blacks voted for Clinton? As a result of voting solidly along racial lines in the last several primary races, the black vote, in conjunction with the Wright controversy and comments made by Obama's wife, have solidified Obama in the minds of many Americans as the "Black Candidate."
In terms of primary politics, this is all fine and good. Polls suggest that at least some Democrats who supported Hillary could not bring themselves to vote for her competitor. I'm willing to take these polls with several grains of salt. I think Democrats, regardless of who they supported in the primary, will vote for the Democratic candidate mainly because they can't and won't bring themselves to vote for a so-called George Bush Republican (a label that is absurd and misapplied in McCain's case). The problem Obama has is with middle of the road swing voters.
For voters who are not registered Democrats, especially independent voters who are still undecided, watching this voting along racial lines is a major turnoff. Seeing the gyrations of the media, trying to explain away any indication of racial divide, trying to sweep any hint of controversy under the rug, stinks to high heaven. Independents are independent for a reason - they don't view themselves as part of a political faction, don't vote along racial lines, and don't drink the Obama Kool-Aid that the media is offering.
If we lay all three candidates out on a flat plane relative to their political position, McCain is on the right, but fairly close to the center. Clinton is on the left, but also fairly close to the center. Obama is on the extreme left, carrying baggage of racial division to boot. Independents who supported Clinton may indeed find more in common with McCain on many issues. Then, add in this racial dimension, his wife's comments, the Wright issue, his various "typical" and "bitter" comments about whites, and you have a formula that turns off many voters who aren't already fully invested in Obama.