CREATE TABLE table_18467 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Who is the incumbent in the Alabama 6 voting district?
SELECT "Incumbent" FROM table_18467 WHERE "District" = 'Alabama 6'
SELECT "Incumbent" FROM "table_18467" WHERE "District" = 'Alabama 6'