SELECT MAX(_number_of_constituency_votes) FROM table_name_18 WHERE election < 1976 AND leader = "eisaku satō" AND _number_of_candidates < 328
Apa # suara konstituensi tertinggi, ketika pemilihan sebelum 1976, ketika pemimpin Eisaku Satō, dan ketika # kandidat kurang dari 328?
CREATE TABLE table_name_18 (_number_of_constituency_votes INTEGER, _number_of_candidates VARCHAR, election VARCHAR, leader VARCHAR)