There were 2 elections due to the August 19, 1937, resignation of two-term Democrat Hugo Black. Democrat Dixie Bibb Graves was appointed August 20, 1937 (by her husband, the governor) to finish Black's term
J. Lister Hill won the primary on Jan 4, 1938 with 61.81% of the vote.
After congressman J. Lister Hill won the January 4, 1938, Democratic primary, Graves resigned and Hill was appointed to continue the term until the April 26, 1938, special election, which he won unopposed.