New Hampshire was won overwhelmingly by the Democratic nominees, incumbent President Lyndon B. Johnson of Texas and his running mate Senator Hubert H. Humphrey of Minnesota.

Johnson and Humphrey defeated the Republican nominees, Senator Barry Goldwater of Arizona and his running mate Congressman William E. Miller of New York.

The staunch conservative Barry Goldwater was widely perceived in the liberal Northeastern United States as a right-wing extremist;[1] he had voted against the Civil Rights Act of 1964, and the Johnson campaign portrayed him as a warmonger who as president would provoke a nuclear war.

As Johnson won a decisive nationwide landslide with 61.05% of the vote, normally Republican-leaning New Hampshire's results made the state over 5% more Democratic than the national average in the 1964 election.

Johnson's strongest victory was in rural, French-Canadian Coös County in the far north of the state, which he won with 71.1% of the vote.