What is the minimum age for citizens to vote for President in the United States?

The minimum age for citizens to vote for President in the United States is eighteen. This requirement is established by the 26th Amendment to the U.S. Constitution, which was ratified in 1971. It states that citizens who are eighteen years of age or older cannot be denied the right to vote based on age. This amendment was a significant milestone in expanding voting rights, particularly for younger citizens, and reflects the principle that individuals who are old enough to participate in decisions that affect their lives and society should also have a voice in the electoral process.