CREATE TABLE table_1342256_38 (candidates VARCHAR, incumbent VARCHAR)
SELECT COUNT(candidates) FROM table_1342256_38 WHERE incumbent = "Leon Sacks"
เมื่อ Leon Sacks ดำรงตำแหน่งมีผู้สมัครจำนวนเท่าใด
what was the number of candidates when Leon Sacks was incumbent?