The electoral map in November

The WSJ offers a thoughtful consideration of how race and religion may shape the electoral map in an Obama-McCain general election. The piece ends with this chilling insight from Charlie Cook:

Analyst Charlie Cook of the Cook Political Report was more skeptical of the idea that Mr. Obama could contend in the South, especially in states such as Mississippi, Georgia and Tennessee. "White voters in Mississippi don't vote Democratic. They just don't," said Mr. Cook. He also believes that the greater the black turnout, the more anti-Democratic white voters become. Possible exceptions include Florida and Virginia.

Is there any difference between this statement and the straight-foward conclusion that whites in Mississippi are unreconstructed racists?