CREATE TABLE table_74015 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Result" CLOB, "Candidates" CLOB)

Name the number of first elected for kentucky 3
SELECT COUNT("First elected") FROM table_74015 WHERE "District" = 'Kentucky 3'
SELECT COUNT("First elected") FROM "table_74015" WHERE "District" = 'Kentucky 3'