1940 United States Senate election in California

The United States Senate election in California of 1940 was held on November 5, 1940. Incumbent Republican Senator Hiram Johnson was re-elected to his fifth term in office, though he would die in office in 1945.

By cross-filing and winning the Democratic and Progressive primaries, Johnson eliminated his strongest competition and handily won the general election with only nominal opposition from the Prohibition Party.

Primaries
Primaries were held on August 27.

Candidates

 * John Anson Ford, member of the Los Angeles County Board of Supervisors for District 3 (cross-filing)
 * Hiram Johnson, incumbent Senator
 * Ellis E. Patterson, Lieutenant Governor (cross-filing)
 * Sam Yorty, State Assemblyman (cross-filing)

Candidates

 * John Anson Ford, member of the Los Angeles County Board of Supervisors for District 3
 * Hiram Johnson, incumbent Senator (cross-filing)
 * James D. Meredith
 * Richard S. Otto
 * Ellis E. Patterson, Lieutenant Governor
 * Sam Yorty, State Assemblyman

Candidates

 * Hiram Johnson, incumbent Senator (cross-filing)
 * Richard S. Otto

Candidates

 * Fred Dyster
 * Hiram Johnson, incumbent Senator (write-in)

Communist

 * Anita Whitney, women's rights activist, perennial candidate, and member of the Field family

Independent
A write-in bid was launched in support of John Anson Ford.