U.S. presidential election, 1964

Presidential Candidate	Electoral Vote	Popular Vote	Pct	Party	Running Mate (Electoral Votes)
Lyndon Baines Johnson of Texas (W)	486	42,825,463	61.0%	Democrat	Hubert Horatio Humphrey of Minnesota (486)
Barry Morris Goldwater of Arizona	52	27,146,969	38.4%	Republican	William Edward Miller of New York (52)
Other	0	374,043	0.6%
Total	538	70,640,289	100.0%
Other elections: 1952, 1956, 1960, 1964, 1968, 1972, 1976
Source: U.S. Office of the Federal Register

The assassination of John F. Kennedy in 1963 created a unique climate for the 1964 elections. Voters were saddened by the loss of the charismatic president, and opposition candidates were put in a very awkward situation.

The new president, Lyndon B. Johnson, capitalized on this situation, using a combination of the national mood and his own political savvy to push Kennedy's agenda; most notably, the Civil Rights Act of 1964. By the time of the nomination, Johnson was unassailable, and easily won the Democratic nomination.

The Republican Party had a more difficult time. Richard Nixon, who had been beaten by Kennedy in a close election, and subsequently lost an election for Governor of California, decided not to run. That left Nelson Rockefeller, the Governor of New York, to run against Barry Goldwater, a Senator from Arizona. It was a stark choice. Rockefeller epitomized the liberal wing of the Republican party, while Goldwater epitomized the conservative wing of the party. Republican voters in New Hampshire disliked both candidates, and gave Ambassador to South Vietnam Henry Cabot Lodge, Jr., Nixon's running mate in 1960 and a former Massachusetts senator, a write-in victory in the primary.

Despite this defeat, Goldwater won the nomination. In accepting his nomination, he uttered his most famous phrase: "I would remind you that extremism in the defense of liberty is no vice. And let me remind you also that moderation in the pursuit of justice is no virtue." Barry Goldwater was also helped by an endorsement by former vice-president Richard M. Nixon.

Johnson positioned himself as a moderate, contrasting himself to Goldwater, who the campaign characterized as an extremist. Most famously, the Johnson campaign issued a commercial dubbed the "Daisy Girl" ad, which featured a little girl picking petals from a daisy in a field, counting the petals, which then segues into a launch countdown and a nuclear explosion. The ads were in response to Goldwater's advocacy of "tactical" nuclear weapons use in Vietnam.

The election was held on November 3, 1964. Johnson crushed Goldwater in the general election, winning 61.0 percent of the popular vote, the largest percentage ever recorded (i.e. since the 1824 election).