Claim: Earle Bradford Mayfield won the Democratic nomination to the US Senate in Texas in 1922 after challenging five-term US Senator Charles A. Culberson, who also served as the 21st Governor of Texas.
Evidence: Senator from Texas, Morris Sheppard of Texarkana, Mayfield won the Democratic nomination. In 1922, Mayfield was one of six candidates who challenged five-term United States Senator Charles A. Culberson for the Democratic senatorial nomination. Charles Allen Culberson (June 10, 1855 – March 19, 1925) was an American political figure and Democrat who served as the 21st Governor of Texas from 1895 to 1899, and as a United States Senator from Texas from 1899 to 1923.