U.S. elections are the process by which citizens choose their representatives and decide on various issues. Elections occur at local, state, and federal levels, with major events including the presidential election every four years. Voters participate by casting ballots for candidates from different political parties, such as the Democratic Party and the Republican Party. The election process involves several steps, including primaries, where parties select their candidates, and the general election, where the final candidates compete. Additionally, elections can include referendums and initiatives, allowing voters to directly decide on specific policies or laws.