70 ILCS 1825/4.6
To locate, establish and maintain a public airport, public airports and public airport facilities within its corporate limits or within or upon any body of water adjacent thereto, and to construct, develop, expand, extend and improve any such airport or airport facility.
Such power and those related thereto may be exercised only with the approval of the voters in the district. The Board shall by ordinance, duly adopted, cause to be submitted to the legal voters of the district a proposition to establish and maintain an airport within the district by certifying the proposition and the ordinance 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, notice of the submission of such proposition at any election shall be published at least 10 days prior to the date of the election at least once in one or more newspapers published in the district or, if no newspaper is published in the district, in one or more newspapers with a general circulation within the district. The proposition shall be in substantially the following form:
------------------------------------------------------------------------ Shall the Joliet Yes Regional Port District be authorized to establish ------------------------------------------- and maintain a public airport facility ? No ------------------------------------------------------------------------
If a majority of those voting upon the proposition vote in favor of the proposition, the Board may thereafter exercise such powers.
70 ILCS 1825/4.6