How old do citizens have to be to vote for the President?

To vote for the President of the United States, citizens must be at least 18 years old. This age requirement is established by the 26th Amendment to the U.S. Constitution, which was ratified in 1971. The amendment was part of a broader movement to lower the voting age, as it was seen as unjust that individuals who were old enough to be drafted for military service (at age 18) were not able to participate in the democracy by voting. As a result, the minimum voting age was standardized to 18 across all states for federal elections, including the presidency, ensuring that young adults have a voice in their government.

The other age options provided do not apply to the voting age for federal elections. Individuals who are 16 or 17 years old are not eligible to vote, and while 21 was the previous voting age prior to the 26th Amendment, it is no longer relevant after the amendment's ratification. Similarly, 25 years old does not correspond to any voting requirement for presidential elections.