CREATE TABLE table_18633 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

what's the incumbent with candidates being sam hobbs (d) 88.2% c. w. mckay (r) 11.8%
SELECT "Incumbent" FROM table_18633 WHERE "Candidates" = 'Sam Hobbs (D) 88.2% C. W. McKay (R) 11.8%'
SELECT "Incumbent" FROM "table_18633" WHERE "Candidates" = 'Sam Hobbs (D) 88.2% C. W. McKay (R) 11.8%'