At each election, at least one (1) poll manager shall be charged with writing in the pollbook the word "VOTED," in the column having at its head the date of the election, opposite the name of each elector upon return of a marked paper ballot by the elector with the initials of the initialing poll manager or alternate initialing poll manager affixed thereon. When a DRE unit is used in the polling place, the word "VOTED" shall be marked by at least one (1) poll manager in the pollbook in the column having at its head the date of the election, opposite the name of the elector.