1964 presidential election results. Red denotes states won by Goldwater, blue denotes states won by Johnson. Numbers indicate the electoral votes won by each candidate.
The Democratic Party picked up 37 seats in the House and two seats in the Senate, thereby capturing veto-proof supermajorities in both chambers. In the gubernatorial elections, the Republican Party won a net gain of one seat. This was the first time since 1948 that a Democratic presidential candidate had coattails in both houses of Congress, which would not occur again until 2008.
As of 2022, this is the most recent presidential election year in which the Democratic Party successfully defended a federal government trifecta and is the only presidential election year where the party did so since 1944. The only time this feat has been replicated in a presidential election year by either party since was when the Republican Party successfully defended a trifecta at the federal level in 2004. It was the last election cycle until 2008 in which a Democratic victory in the presidency had triggered a coattail effect down the ballot.
^The Class 1 Senate seat in New Mexico held concurrent regular and special elections. That special election is not counted as part of the "seats contested."
