1960 Democratic Party presidential primaries

From March 8 to June 7, 1960, voters and members of the Democratic Party elected delegates to the 1960 Democratic National Convention through a series of caucuses, conventions, and primaries, partly for the purpose of nominating a candidate for President of the United States in the 1960 election. The presidential primaries were inconclusive, as several of the leading contenders did not enter them, but U.S. Senator John F. Kennedy of Massachusetts emerged as the strongest candidate and won the nomination over Lyndon B. Johnson at the convention, held from July 11 to 15 at the Los Angeles Memorial Sports Arena.

Source: Wikipedia — 1960 Democratic Party presidential primaries (CC BY-SA 4.0)