The nationalist and republican factions in Spain were coalitions, with the former a mix of "throne and altar" traditionalists and fascists and the latter a combination of Communists, democratic socialists, and anarchists. Something like that would occur if we had a civil war. The Spanish Civil War also had an ethnic elements, with nationalist Basques and Catalans generally supporting the leftist republicans. We would have the same issue with blacks and Hispanics leaning to the leftist coalition.
But maybe our new civil war won’t include proxy war by foreign air forces, as in Spain 1936-39 & currently in Syria.
Will there be huge population shifts of political refugees, with conservatives fleeing blue states & vice versa? We already have liberals fleeing liberal states and bringing their liberal ways with them.
“We would have the same issue with blacks and Hispanics leaning to the leftist coalition.”
Be aware of the race war between Mexicans and blacks before making that assessment.
https://www.google.com/?gws_rd=ssl#q=race+war+between+Mexicans+and+blacks
The propaganda media has embargoed reports of it into the national press outlets.