The returning officer's approval of an advance vote that is placed in a ballot box 

(1) A vote cast in advance pursuant to section 8-4 second subsection shall be approved if

a) the voter is included in the electoral register in the municipality

b) the voter was given the opportunity to cast a vote, and

c) the voter has not already cast an approved vote.

(2) A voter's vote is approved when the person in question has been crossed off in the electoral register.