A presidential election is a process in which citizens vote to choose their country's leader, known as the President. This event typically occurs every four years in many countries, including the United States. Candidates from various political parties campaign to gain support from voters, presenting their ideas and policies. During the election, voters cast their ballots on a designated day, and the candidate with the most votes usually wins. In some countries, there may be additional steps, such as an electoral college system, which can influence the final outcome. The elected President then serves a fixed term in office.