Who are all the candidates when Sam Rayburn was incumbent?
CREATE TABLE table_1342292_42 (candidates VARCHAR, incumbent VARCHAR)
SELECT candidates FROM table_1342292_42 WHERE incumbent = "Sam Rayburn"
### Context: CREATE TABLE table_1342292_42 (candidates VARCHAR, incumbent VARCHAR) ### Question: Who are all the candidates when Sam Rayburn was incumbent? ### Answer: SELECT candidates FROM table_1342292_42 WHERE incumbent = "Sam Rayburn"