Answer:
By direct voting
Step-by-step explanation:
In the system of presidential democracy, the leader of the state is chosen by the direct voting of the people. Each person's votes was the preferred candidate, the votes are counted and the candidate who has the majority of the votes is elected as the leader. The leader is most often called president.
In the true democratic system, the leader has to answer to the people and it is the citizens who have power over politics.
This is a different system from the parliamentary democracy in which the leader of the state is elected by the parliament.