Twenty-second Amendment to the United States Constitution
The amendment prohibits any individual who has been elected president twice from being elected again. Under the amendment, an individual who fills an unexpired presidential term lasting greater than two years is also prohibited from winning election as president more than once. Scholars debate whether the amendment prohibits affected individuals from succeeding to the presidency under any circumstances or whether it only applies to presidential elections.
United States presidential election
Like any other election in the United States, the eligibility of an individual for voting is set out in the Constitution and regulated at state level. The Constitution states that suffrage cannot be denied on grounds of race or color, sex or age for citizens eighteen years or older. Beyond these basic qualifications, it is the responsibility of state legislatures to regulate voter eligibility.