CREATE TABLE table_name_99 (district VARCHAR, first_elected VARCHAR, incumbent VARCHAR)

In what district was incumbent Russ Carnahan elected after 2000?
SELECT district FROM table_name_99 WHERE first_elected > 2000 AND incumbent = "russ carnahan"
SELECT "district" FROM "table_name_99" WHERE "first_elected" > 2000 AND "incumbent" = "russ carnahan"