The United States presidential election of 1964 was the 45th quadrennial presidential election. It was held on Tuesday, November 3, 1964. Incumbent Democratic President Lyndon B. Johnson defeated Barry Goldwater, the Republican nominee. With 61.1% of the popular vote, Johnson won the highest share of the popular vote of any candidate since the uncontested 1820 election.
Johnson had come to office in November 1963 following the assassination of his predecessor, John F. Kennedy. He easily defeated a primary challenge by segregationist Governor George Wallace of Alabama to win nomination to a full term. At the 1964 Democratic National Convention, Johnson also won the nomination of his preferred running mate, Senator Hubert Humphrey of Minnesota. Senator Barry Goldwater of Arizona, a leader of his party's conservative faction, defeated moderate Governor Nelson Rockefeller of New York and Governor William Scranton of Pennsylvania at the 1964 Republican National Convention.
Johnson championed his passage of the Civil Rights Act of 1964, and his campaign advocated a series of anti-poverty programs collectively known as the Great Society.