(a) The original registration cards shall be filed by polling districts, and within each polling district, in exact alphabetical order. The cards so filed for each polling district shall constitute the district register for such district. The district register and any and all subdivisions thereof, shall be kept at the office of the board except when used at primaries and elections, as hereinafter provided, and shall be open to public inspection at all times, subject to reasonable safeguards, rules and regulations.
(b) If more than one polling place for a polling district is established under section 194 of this title, the district register for such district shall be subdivided into separate registers for each such polling place according to such allotment of the registered voters of the district among the polling places by area of residence, alphabetical position of surname or otherwise as the board of elections of the election district may prescribe. The names of the registered voters thus allotted to each polling place shall be arranged in the subdivision of the district register provided for such polling place in exact alphabetical order.
(c) The district register may be compiled in an electronic format.