10 ILCS 5/24-6
For any election in which voting machines are to be used, the election precincts in which such voting machines are to be used may be created or consolidated into one area by the election authority so as to contain as near as may be five hundred voters for each voting machine to be used therein. The said consolidated precincts to consist of no more than four and to be contiguous and to be known as Consolidated Areas. When voting machines are used in contiguous precincts as now or hereafter established, they shall be consolidated in such manner as to provide for the efficient and economical use thereof. Such consolidation shall be made under such regulations as to time and manner as are now provided by law, shall be for the purpose of more efficient conduct of an election and shall not constitute a change in precinct boundaries.
10 ILCS 5/24-6