CREATE TABLE table_18332 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

What district is Charles H. Wilson the incumbent of?
SELECT "District" FROM table_18332 WHERE "Incumbent" = 'Charles H. Wilson'
SELECT "District" FROM "table_18332" WHERE "Incumbent" = 'Charles H. Wilson'