John F. Kennedy won the Democratic presidential nomination at the party's convention 55 years ago Monday.
The then-senator was elected on the first ballot at the 1960 Democratic National Convention in Los Angeles, after narrowly missing out on the vice presidential nomination four years earlier. He became the first Catholic president and the youngest U.S. president ever elected when he beat GOP candidate Richard Nixon in the general election that November.
See photos of the 1960 Democratic National Convention below:
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