(a) In primary elections, the voter shall first hand any unvoted primary ballots to the appropriate election official, who shall deposit those ballots in a receptacle marked for unvoted primary ballots. The voter shall then deposit the voted ballot in the ballot box or vote tabulator, unless the voter requires assistance in depositing the ballot.
(b) In all other elections, the voter shall, without displaying the marks thereon and under the supervision of an election official, deposit each ballot into the proper ballot box or in the vote tabulator.
(c) Except as provided in section 2569 of this title, no election official or other person shall look at the contents of any ballot.