CREATE TABLE table_72399 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Result" CLOB, "Candidates" CLOB)

Who were the candidates in the Kentucky 4 voting district?
SELECT "Candidates" FROM table_72399 WHERE "District" = 'Kentucky 4'
SELECT "Candidates" FROM "table_72399" WHERE "District" = 'Kentucky 4'