Much of the divide politically in this country is really North-South, not racial or ethnic. The Republican Party has become the party of the South and is destined to be relegated a dwindling, regional party. The ideology of the South has become the ideology of the Republican Party. In an article in Salon, Michael Lind, an author from the South, writes persuasively that the genesis of this divide is the basis of our current political paralysis and has its roots in the different way the South has experienced American history from the Northeast, Midwest and West. Essentially, the rest of the country outside the South perceives American history as one of military success, against the British, the Confederacy, the Nazis and Japanese, and the Soviet Union in the Cold War. The South, he argues, sees American history as a series of defeats, from the Civil War, the end of slavery, the Civil Rights movement, etc. It is definitely worth a read:
http://www.salon.com/2013/02/05/the_...s_last_defeat/