Succession would be in nobody's best interest, and remember that the "red" states would lose the money that they get from the "blue" states. A civil war would only bring about the same situation that occurred last time: a gigantic pile of rubble. Look what happened to Beirut, long before Tuesday's explosion.
What we need is a president who recognizes that s/he is president of ALL Americans; not one that never fails to mention how bad the other political party in every single speech he makes. trump has consistently been "Democrats this, Democrats that" every day. He has only been president of republicans, a fact that he always makes perfectly clear.