It's not just ugly people/mutants outside of the right wing. The world is more complicated than that. Both the right and left consists of different groups of people who are there for different reasons. In blue states, being a liberal is what is normal and accepted. So for example, all the sheeple in these states will become liberals. Meanwhile in red states, all the sheeple will become conservatives. Sheeple just flock to the dominant group. But yes, ugly people/mutants tend to be drawn to the left. EDIT: Meanwhile most non whites and mixed race people are going to flock to the left for obvious reasons.