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

What is the Party of District of Illinois 19 with an Incumbent First elected in 1996?
SELECT party FROM table_name_37 WHERE first_elected = 1996 AND district = "illinois 19"
SELECT "party" FROM "table_name_37" WHERE "district" = "illinois 19" AND "first_elected" = 1996