How old must citizens be to vote for President?

The requirement for citizens to vote for President is that they must be at least eighteen years old. This age requirement is established by the 26th Amendment to the U.S. Constitution, which was ratified in 1971. The amendment was designed to lower the voting age from twenty-one to eighteen, in response to criticisms that young adults were being drafted to fight in wars but were not allowed to vote. As a result, any citizen who is eighteen years of age or older is eligible to participate in federal elections, including voting for the President. The other options do not meet the constitutional requirement, as voting is not permitted at those younger ages.