10 ILCS 5/1A-5
An appointment to fill each vacancy on the State Board of Elections shall be made pursuant to the appropriate paragraph of Section 1A-3 in the same manner as the appointment of members for new terms. Each appointment to fill a vacancy shall be for the completion of the term of that position.
The Governor shall make an appointment to fill each vacancy and shall submit it to the President of the Senate within 30 days of the occurrence of the vacancy, or within 30 days of the submission of a list of nominees to him pursuant to paragraph (3) of Section 1A-3, whichever is later. A nominating state officer shall submit to the Governor his required list of nominees to fill a vacancy within 15 days of the occurrence of the vacancy. If the Governor does not fill a vacancy required to be filled pursuant to paragraph (3) of Section 1A-3 within the required 30 days, the nominating state officer shall make the appointment from among the nominees he previously submitted.
10 ILCS 5/1A-5