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
Lyndon LaRouche's U.S. presidential campaigns were a controversial staple of American politics between 1976 and 2004. LaRouche ran for president on eight consecutive occasions, a record for any candidate, and has tied Harold Stassen's record as a perennial candidate. LaRouche ran for the Democratic nomination for President of the United States seven times, beginning in 1980. His current Political Action Committee is called "LaRouche PAC."