Immediate domestic political consequences for the Union in a Southern victory ACL

I was wondering what do you think would be the most likely re-arrangement of northern internal politics in a TL in which the South wins the civil war. Would it vindicate the copperheads and usher in an era of confederate-friendly presidents? Or maybe the radical republicans will become like Northern revanchists and call for ever-more hostile relations with the confederacy? I honestly would like somebody else's input on this.

Mind you I'm only asking about the immediate consequences, i.e. 10-20 years after the war, not what happens in the 20th cent. or if\once the confederacy collapses.
 
Republicans might be highly discredited and it will go to history as party which failed keep South. Democrats too might have chaotic moment depending how Union would lost the war.
 
Republicans might be highly discredited and it will go to history as party which failed keep South. Democrats too might have chaotic moment depending how Union would lost the war.
How likely is it that two completely new parties with new bases of support and new political aims replace both the republicans and democrats?
 
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