Would you elaborate on other possible outcomes?

Winning elections. Peaceful protest. Separation. Apathy. Waiting. Acceptance.

Winning elections and peaceful protest are not breakdowns of political process. They're part of it. As are waiting and acceptance/apathy. What separation has come about that hasn't been violent?

Czechoslowakia.

https://en.wikipedia.org/wiki/Dissolution_of_Czechoslovakia

Unfortunately we have Yugoslavia as counter example, it started off well but ended up extremely bloody.

Thanks! It's always good to be able to know when absolutes should be avoided (as they so often are).