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

[True Federalist (진정한 연방 주의자)]

One reason why so many Southern whites are Republican is the natural result of significant numbers of solidly Democratic blacks.  This result does not depend on racism, tho it sadly is affected by it.  In a two party system, the relatively non-ideological parties we have will tend to adopt positions on what are perceived as non-core positions that lead towards splitting the vote relatively equally,  If you have a core 30 to 40% of the vote that is solidly Democratic, then naturally the remaining 60 to 70% will tend to lean towards the Republicans.  In other places, you don't have the solidly Democratic black voters forming as large a share of the Statewide electorate and so as a result in order to keep things reasonably balanced between the two parties as a whole, you don't need large disparities in the party affiliation of white voters.