Why do we need a score determining political power? If someone has political power, they do, and they can utilize it, they don't need a game mechanic determining a vague concept for them, which may or may not agree with that actual political situation in a realm. I've seen knights who have wielded more political power than Dukes, and Lords with more political power than Kings. Giving someone a political power score purely based on position is folly. This game has seen more than one puppet King and more than one character who was the real power behind the throne.