Incumbent Democratic President Harry S. Truman won Oklahoma by a landslide 25.5 percentage points.

In Dwight D. Eisenhower's landslide elections of 1952 and 1956, Adlai Stevenson II lost every antebellum free-soil or postbellum state, however Oklahoma remained more Democratic than the nation as a whole.

[2] In 1960, John F. Kennedy lost most postbellum states, including Oklahoma, due to anti-Catholic sentiment.

[3] In 1964, Lyndon Johnson became the last Democratic presidential candidate to carry the state,[4] with only Jimmy Carter in 1976 subsequently reaching even 45% of the vote, and no Democrat after 2000 reaching 35% of the vote or even winning a single county in the state.

The Progressives appealed to the Supreme Court of the United States, but John Abt dropped the lawsuit due to the "difficulty of getting grounds for a federal suit".