At what age must citizens be to vote for President?

Citizens must be 18 years old to vote for President in the United States. This age requirement is established by the 26th Amendment to the Constitution, which was ratified in 1971. The amendment was a response to concerns that those who were old enough to be drafted for military service should also have the right to participate in elections. Therefore, by mandating that citizens can vote upon reaching 18, the amendment aimed to expand democratic participation and ensure that the voices of younger citizens are heard in the electoral process. This standard applies not only to presidential elections but also to all federal, state, and local elections in the United States.