One of the precinct election officials shall at once, after receiving the ballot, in the presence of the voter, deposit it in the ballot box. [C51, §257; R60, §492; C73, §617; C97, §1117; C24, 27, 31, 35, 39, § 802; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §49.85 ] Referred to in §39A.4