(65 ILCS 5/3.1-40-10) (from Ch. 24, par. 3.1-40-10)
    Sec. 3.1-40-10. Judge of elections. The city council shall be the sole judge of the election to office of the aldermen. It shall also be the sole judge whether under Section 3.1-10-5 aldermen are eligible to hold their offices. A court, however, shall not be prohibited from hearing and determining a proceeding in quo warranto.
(Source: P.A. 87-1119.)