(1) The election administrator shall record in a log he maintains for that purpose the number and source of all ballots received at the processing center including:

(a) the number of ballots received daily from the post office;

(b) the number of ballot packets returned as undeliverable each day;

(c) the number of ballots returned or voted in person each day; and

(d) the number of ballots received from any place of deposit on the day they are transported to the processing center.