My question is this: Does a PC marker have to be present? Or if the circle is not your color is it considered to be Politically Controlled by that color's player?
To save counter space PC markers are assumed to be in the spaces on the map. Thus a red circle on the map is the same as a space with a Roman PC marker.
Since the 5th player expansion now comes with the new edition it would make sense to kill the 5th player expansion entry or at least somehow merge it with this entry.