Political thought is elastic not dualistic. In our constitutional system we have three branches not two and the political parties are not found in our organic law. SeeĀ http://www.p2012.org/parties/
I wonder if the parties collapsed due to political failure–would civil order fail too? Or would democracy evolved into a more obvious totalitarianism? The elastic nature of democracy would favor more political diversity if that is truly the nature of our current system.