a_unique_person
Director of Hatcheries and Conditioning
So wait in the UK if a Prime Minister steps down only people from his party get to vote on the next one?
Like functionally equivalent to if Trump were to resigned right now only registered Republicans would be able to vote on the next President?
That's... weird.
You are just looking at it the wrong way. The head of state is the Queen for the UK (Monarchy) or the President of the USA (elected). The Prime Minister is the equivalent of the USA leader of the House. Since the head of state in the USA is elected, he has more power than the head of state of the UK, who, over time, has become more of a figure head than anything else. Just imagine if the President of the USA was like the head of state of other countries that also have an elected president who actually has very little power. Then the Leader of the House would be in effect the leader of the USA.