Kennedy was frequently mentioned as a possible Democratic presidential candidate in 1972 and 1976. However, he chose not to run due to his controversial past and claimed to have family concerns after his two brothers were assassinated. But in 1980 he decided to primary incumbent Democratic President, [[Jimmy Carter]]. Despite Carter's unpopularity, he won the primary and eventually lost to [[Ronald Reagan]].
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Kennedy was frequently mentioned as a possible Democratic presidential candidate in 1972 and 1976. However, he chose not to run due to his controversial past and claimed to have family concerns after his two brothers were assassinated. But in 1980 he decided to challenge incumbent President [[Jimmy Carter]] for the Democratic nomination. Though Carter was unpopular, Kennedy failed in his effort to supplant him as the party's nominee.