CREATE TABLE table_1342233_6 (district VARCHAR2, result VARCHAR2, candidates VARCHAR2)

what's the district with result being re-elected and candidates being clarence f. lea (d) unopposed
SELECT district FROM table_1342233_6 WHERE result = "Re-elected" AND candidates = "Clarence F. Lea (D) Unopposed"
SELECT "district" FROM "table_1342233_6" WHERE "Clarence F. Lea (D) Unopposed" = "candidates" AND "Re-elected" = "result"