Section 5-600. Registration records; filing of

1. The board of elections
  shall keep all registration records, when not in use at the polls for an
  election, at its main office, or a branch office designated by it.  Such
  records  shall  be  kept in locked ledgers or locked filing cabinets and
  shall not be removed from the office or branch office of  the  board  of
  elections,  except  that  the  registration  poll  records of all voters
  entitled to vote at an election shall be delivered as provided  in  this
  chapter  to  the appropriate election district polling places for use at
  such election.
    2. The central file registration records shall be filed for the entire
  county  using  a  system  permitting   location   by   name.   Cancelled
  registration  records shall be filed separately and shall be arranged in
  the same manner as current registration records.
    3. The registration poll  records  shall  be  classified  by  election
  districts,  the records for each election district being filed according
  to street, by number, and alphabetically within any address  or  in  the
  discretion of the board of elections they may be filed alphabetically by
  name of voter.
    4.  Any  registration record not completed because of the refusal of a
  board of inspectors to register an applicant shall be filed by the board
  of elections with the cancelled registration records as  if  the  person
  affected had registered and his registration had been cancelled.
    5.  After receipt thereof from a board of inspectors at the close of a
  period of local registration, the board of  elections,  before  removing
  any  records  or  blank  forms  from  any ledger containing registration
  records of voters registered during  such  period,  shall  compare  such
  records  and  blanks  with  the  certificate  filed  by  such  board  of
  inspectors. It shall investigate any discrepancy between  such  returned
  material  and  the information contained on such certificate and if such
  discrepancy is not satisfactorily resolved, it shall, at the request  of
  any  commissioner,  make a written report thereof in triplicate and send
  one copy of such report to the district attorney and one  to  the  state
  board  of  elections  and keep the third copy on file at its office as a
  public record. The board of elections shall then remove the records  and
  blanks from the ledgers and shall file them as provided herein.