The non liberal white Democratic voters are in the most danager of bolting the Democratic party, should a viable 3rd party alternative emerge in 2008. While this contingent has been shrinking for decades, they still tilted the upper midwest + PA towrds Kerry in 2004, and they largely voted Democrat because of their fustration with free trade, but on cultural issues, they are conservatives. For blacks, they are so entrenched into Democratic politics that I seriously doubt they will vote less than 85% Democratic for another generation unless there is a 2nd great depression that can be blamed on Democrats.
But the way I figure it, should a Lou Dobbs style canidate emerge in 2008 with proper funding, that runs on a anti immigrationa and anti free trade(anti globalist) platform, it will play havoc all over the political spectrum.
"The non liberal white Democratic voters......"
No such people.