Table:
text: United States House of Representatives elections, 1938
Texas
Texas
District Incumbent Party First_elected Result_ Candidates
Texas 1 Wright Patman Democratic 1928 Re-elected Wright Patman (D) 98.8% Joe C. Hailey (R) 1.2%
Texas 2 Martin Dies, Jr. Democratic 1930 Re-elected Martin Dies, Jr. (D) Unopposed
Texas 3 Morgan G. Sanders Democratic 1920 Lost renomination Democratic hold Lindley Beckworth (D) Unopposed
Texas 4 Sam Rayburn Democratic 1912 Re-elected Sam Rayburn (D) 97.9% Ross E. Johnson (R) 2.1%
Texas 6 Luther A. Johnson Democratic 1922 Re-elected Luther A. Johnson (D) Unopposed
Texas 7 Nat Patton Democratic 1934 Re-elected Nat Patton (D) Unopposed
Texas 9 Joseph J. Mansfield Democratic 1916 Re-elected Joseph J. Mansfield (D) Unopposed

Question: ; What are all the candidates in the United States House of Representatives election, 1938, when Sam Rayburn was officiating in the Texas election?