105 ILCS 5/7-3
No petition affecting the boundaries of any school district may be filed under this Article after the district has published the required legal notice calling an election to authorize the issuance of bonds to be held on a date not later than 21 days after such publication until the first of the following events shall have occurred (1) the voters did not authorize the issuance of the bonds at the election, (2) the bonds have been issued, (3) the school board of the district has adopted a resolution abandoning its plan to issue such bonds, or (4) seventy-five days have elapsed since such election, provided that if proceedings are pending hereunder affecting the boundaries of such district at the time the notice of such election is published or if the district is a party to litigation affecting the legality of its existence or its boundaries at such time, the said seventy-five days shall not begin to run until the final determination of such proceedings or litigation and the expiration of the time for review, appeal or rehearing, and provided that the provisions of this section shall be applicable only to the first such election called to be held in any one calendar year.
105 ILCS 5/7-3