65 ILCS 5/5-5-6
If a city or village operating under this Article 5 desires to submit (1) the rejection or continuance of the managerial form of municipal government and (2) the adoption or abandonment of the commission form or the strong mayor form of municipal government if the managerial government is abandoned, both propositions may be submitted at the same election, and may be printed on the same ballot, but each proposition shall be stated separately. In case the 2 petitions are filed, the time limitation in Section 5-5-1 shall not apply. If the proposition to abandon the managerial form of municipal government receives a majority of the votes and the proposition to adopt or to abandon Article 4 or Article 6, as the case may be, receives a majority of the votes, the provision in Section 5-5-1 that such city or village shall become subject to the provisions of Article 3, 4 or 6, whichever article was in force in such city or village immediately prior to the abandonment or the plan authorized by this Article 5 shall not apply. In case the proposition to abandon the managerial form of municipal government fails to receive a majority of votes and the proposition to adopt or to abandon Article 4 or Article 6, as the case may be, receives a majority of votes, the provisions of Section 5-5-5 shall be applicable.
In case the proposition to abandon the managerial form of municipal government receives a majority of votes, and the proposition to adopt or to abandon Article 4 or Article 6, as the case may be, fails to receive a majority of the votes, the provision in Section 5-5-1 that such city or village shall become subject to the provisions of Article 3, Article 4 or Article 6, whichever article was in force in such city or village immediately prior to the adoption of the plan authorized by this Article 5 shall be applicable.
65 ILCS 5/5-5-6