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.
Lyndon LaRouche U.S. presidential campaigns
He ran even though his home state of Virginia is one of a handful of states which still has lifetime denial of the vote to felons, which can be overturned only on appeal to the governor. (Neither the Constitution nor federal statute law requires presidents to be registered voters.) The Democratic Party did not consider his candidacy to be legitimate and ruled him ineligible to win delegates. He gained negligible electoral support. He was endorsed by two Democratic state representatives, Erik Fleming of Mississippi and Harold James of Pennsylvania, though Fleming later called the endorsement "the worst mistake of all." LaRouche was not one of the major candidates invited to the primary-season debates, although he did participate in some alternative forums for minor candidates.