70 ILCS 1845/33
At least 5% of the legal voters resident within the limits of such proposed addition to the District shall petition the circuit court for the county in which the major part of the District is situated, to cause the question to be submitted to the legal voters of such proposed additional territory, whether such proposed additional territory shall become a part of the District and assume a proportionate share of the general obligation bonded indebtedness, if any, of the District. Such petition shall be addressed to the court and shall contain a definite description of the boundaries of the territory to be embraced in the proposed addition.
Upon filing any such petition with the clerk of the court, the court shall fix a time and place for a hearing upon the subject of the petition.
Notice shall be given by the court to whom the petition is addressed, or by the circuit clerk or sheriff of the county in which such petition is made at the order and direction of the court, of the time and place of the hearing upon the subject of the petition at least 20 days prior thereto by at least one publication thereof in any newspaper having general circulation within the area proposed to be annexed, and by mailing a copy of such notice to the mayor or president of the board of trustees of all cities, villages and incorporated towns within the District.
At the hearing all persons residing in or owning property situated in the area proposed to be annexed to the District may appear and be heard touching upon the sufficiency of the petition. If the court finds that the petition does not comply with the requirements of the law, the court shall dismiss the petition; but if the court finds that the petition is sufficient the court shall certify the proposition to the proper election officials, who shall submit the proposition to the voters at an election in accordance with the general election law. In addition to the requirements of the general election law, such notice shall specify the purpose of such election with a description of the area proposed to be annexed to the District.
Each legal voter resident within the area proposed to be annexed to the District shall have the right to cast a ballot at such referendum. The proposition shall be in substantially the following form:
------------------------------------------------------------------------ For joining the Seneca Regional Port District and assuming a proportionate share of general obligation bonded indebtedness, if any. ------------------------------------------------------------------------ Against joining the Seneca Regional Port District and assuming a proportionate share of general obligation bonded indebtedness, if any. ------------------------------------------------------------------------
The court shall cause a statement of the result of such election to be filed in the records of the court.
If a majority of the votes cast upon the question of annexation to the District are in favor of becoming a part of such District, the court shall then enter an order stating that such additional territory shall thenceforth be an integral part of the Seneca Regional Port District and subject to all of the benefits of service and responsibilities of the District. The circuit clerk shall transmit a certified copy of the order to the circuit clerk of any other county in which any of the territory affected is situated.
70 ILCS 1845/33