SELECT COUNT(first_elected) FROM table_1342370_42 WHERE result = "Re-elected" AND incumbent = "Hatton W. Sumners"
Berapa banyak yang terpilih pertama kali terdaftar ketika Hatton W. Sumners petahana dan terpilih kembali?
CREATE TABLE table_1342370_42 (first_elected VARCHAR, result VARCHAR, incumbent VARCHAR)