CREATE TABLE table_name_37 (first_elected INT, party VARCHAR, district VARCHAR)

In what year was the republican incumbent from Kentucky 2 district first elected?
SELECT SUM(first_elected) FROM table_name_37 WHERE party = "republican" AND district = "kentucky 2"
SELECT SUM("first_elected") FROM "table_name_37" WHERE "district" = "kentucky 2" AND "party" = "republican"