Answer:
The advantage of being the leader of a political party or the President is that the party leader or the president gets to give the final decision on any issue concerning the party or the nation (in case of President).
Step-by-step explanation:
A leader of a political party or the President ultimately get to exercise supreme power over anyone else working below them. They can make decisions that they believe are rightful and can order their subordinates and inferiors to work towards the implementation of their decision.