Why are Southern whites so out of the mainstream of America?

[Lunar]

Mmm, that's actually an interesting question.  While, of course, the margins are nothing compared to say, African-Americans.  But is there any racial or similar demographic that varies that much over regions?  Non-Southern vs. Southern Whites might be the biggest regional-racial gap.

Your regions may be too broad.  Did Wyoming Whites really vote any differently?  It may be a product of simply regional differences in philosophy, but it's more noticeable in the South where African-Americans provide such a distinct contrast.

[Lunar]

There's just a swath of the country that's very Republican stretching from the South heading Northwest until you hit Idaho.  African-Americans are somewhat segregated politically.  

Meh, I just say that White Southern Baptists are about the same as White Mormons.  I don't know if Louisiana would really vote 90-10 if there were no blacks, so there may be some racial backlash, but I wouldn't say that is necessarily the critical component.

meh

What region of the country has blacks most out of the mainstream?

I imagine that you'll hit different levels of religiosity if you compare African-Americans in Boston to those in Mississippi to those in L.A. to those in Seattle, yaddamean?