Hint: He was elected at the age of 43.

John F. Kennedy holds the distinction of being the youngest elected president of the United States. He was elected at the age of 43 in 1960, defeating Richard Nixon in a closely contested race.

Though Theodore Roosevelt was the youngest person to ever serve as president, taking office at age 42 following the assassination of William McKinley, Kennedy remains the youngest to have been elected. Kennedy's youth and charisma were central to his campaign, helping him connect with voters during a time of political and social change in America.