John Fitzgerald Kennedy (May 29, 1917 – November 22, 1963), commonly known as "Jack" or by his initials JFK, was the 35th President of the United States, serving from January 1961 until he was assassinated in November 1963.
After military service as commander of Motor Torpedo Boats PT-109 and PT-59 during World War II in the South Pacific, Kennedy represented Massachusetts' 11th congressional district in the U.S. House of Representatives from 1947 to 1953 as a Democrat. Thereafter, he served in the U.S. Senate from 1953 until 1960. Kennedy defeated Vice President and Republican candidate Richard Nixon in the 1960 U.S. presidential election. At age 43, he was the youngest to have been elected to the office,. the second-youngest president (after Theodore Roosevelt), and the first person born in the 20th century to serve as president. , Kennedy has been the only Catholic president and the only president to have won a Pulitzer Prize.