10 ILCS 5/4-3
The county board shall appoint the place of registry in each precinct for any precinct re-registration of 1969 and 1970 under this Article 4 and for all precinct registrations. Such place or places shall be in the most public, orderly and convenient portions thereof; and no building or part of a building shall be designated or used as a place of registry, in which spirituous or intoxicating liquor is sold or which is used as political headquarters for any party, candidate or office holder. The county clerk may demand of the chief of police of each city, village or incorporated town, or the sheriff, to furnish officers of the law to attend during the progress of any registration at any place or places of registration designated by the county board.
10 ILCS 5/4-3