115 ILCS 5/8
Elections shall be by secret ballot, and conducted in accordance with rules and regulations established by the Illinois Educational Labor Relations Board. A secret ballot election may be conducted electronically, using an electronic voting system, in addition to paper ballot voting systems. An incumbent exclusive bargaining representative shall automatically be placed on any ballot with the petitioner's labor organization. An intervening labor organization may be placed on the ballot when supported by 15% or more of the employees in the bargaining unit. The Board shall give at least 30 days notice of the time and place of the election to the parties and, upon request, shall provide the parties with a list of names and addresses of persons eligible to vote in the election at least 15 days before the election. The ballot must include, as one of the alternatives, the choice of "no representative". No mail ballots are permitted except where a specific individual would otherwise be unable to cast a ballot.
The labor organization receiving a majority of the ballots cast shall be certified by the Board as the exclusive bargaining representative. If the choice of "no representative" receives a majority, the employer shall not recognize any exclusive bargaining representative for at least 12 months. If none of the choices on the ballot receives a majority, a run-off shall be conducted between the 2 choices receiving the largest number of valid votes cast in the election. The Board shall certify the results of the election within 6 working days after the final tally of votes unless a charge is filed by a party alleging that improper conduct occurred which affected the outcome of the election. The Board shall promptly investigate the allegations, and if it finds probable cause that improper conduct occurred and could have affected the outcome of the election, it shall set a hearing on the matter on a date falling within 2 weeks of when it received the charge. If it determines, after hearing, that the outcome of the election was affected by improper conduct, it shall order a new election and shall order corrective action which it considers necessary to insure the fairness of the new election. If it determines upon investigation or after hearing that the alleged improper conduct did not take place or that it did not affect the results of the election, it shall immediately certify the election results.
Any labor organization that is the exclusive bargaining representative in an appropriate unit on the effective date of this Act shall continue as such until a new one is selected under this Act.
115 ILCS 5/8