1940 United States Senate election in New Jersey

The United States Senate election of 1940 in New Jersey was held on November 5, 1940.

Incumbent Republican Senator William Warren Barbour was re-elected over Democrat James H. R. Cromwell, who had recently been appointed United States Ambassador to Canada.

Candidates

 * William Warren Barbour, incumbent Senator since 1938
 * C. Dan Coskey, candidate for Senate in 1936 and 1938
 * George O. Pullen, candidate for Senate in 1938

Candidates

 * James H. R. Cromwell, United States Ambassador to Canada

Candidates

 * William Warren Barbour (Republican), incumbent Senator
 * George Breitman (Socialist Workers), activist and editor of The Militant
 * McAlister Coleman (Socialist), journalist and author
 * James H. R. Cromwell (Democrat), United States Ambassador to Canada
 * Mary E. Dooner (Communist)
 * Edson R. Leach (Prohibition)
 * Harry Santhouse (Socialist Labor)
 * James A. Tumulty (Constitutional)