I agree with BooMan that the Southern Strategy isn't dead -- in the south, that is. In fact, it'll be used to divide white and black southerners more often during this Republican decline. Anything to hold on to voters. So it's likely that in 2010, we'll actually see an uptick in racial fear-mongering.
But where the Southern Strategy was an epic fail, and will be rolled-out less frequently, is in the northern and western states. In Pennsylvania, for instance, the around-the-clock Rev. Wright ads failed miserably and the Obama margin of victory here was huge compared to Kerry's four years ago. So the Southern Strategy is almost dead in this year's blue states.