CREATE TABLE table_18663 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

what's the district with incumbent being john e. miller
SELECT "District" FROM table_18663 WHERE "Incumbent" = 'John E. Miller'
SELECT "District" FROM "table_18663" WHERE "Incumbent" = 'John E. Miller'