10 ILCS 5/7-62

In cities having a board of election commissioners, the duties herein imposed upon the county, city, incorporated town or village clerk, as the case may be, shall be discharged by the board of election commissioners in the same manner, as near as may be, and to the same extent and with like effect that the similar duties imposed by this Article are discharged by the county, city, incorporated town or village clerk, as the case may be; and the ballots for the nomination of all candidates to be voted for in such city shall be printed by the board of election commissioners and the returns of the primary held in such city shall be made to such board of election commissioners.