CREATE TABLE table_1342218_11 (first_elected VARCHAR2, candidates VARCHAR2)

What year was first elected william m. wheeler (d) unopposed?
SELECT first_elected FROM table_1342218_11 WHERE candidates = "William M. Wheeler (D) Unopposed"
SELECT "first_elected" FROM "table_1342218_11" WHERE "William M. Wheeler (D) Unopposed" = "candidates"