Severa, I'm older than you. By the time you reach my age you learn that every politician sooner or later gives you the creeps.
You choose the one who will do less damage and advance to a further degree what you believe in. (If you want to get to point Z, would you prefer to start at point M or point A?) Then you fight, and keep fighting the rest of your life, to make things better.
What you don't do is give up, get angry because you differ on some issues with a particular politician, and let the SOBs take over, knocking you back to point A.