10 ILCS 5/3-3
Every honorably discharged soldier or sailor who is an inmate of any soldiers' and sailors' home within the State of Illinois, any person who is a resident of a facility licensed or certified pursuant to the Nursing Home Care Act, the Specialized Mental Health Rehabilitation Act of 2013, the ID/DD Community Care Act, or the MC/DD Act, or any person who is a resident of a community-integrated living arrangement, as defined in Section 3 of the Community-Integrated Living Arrangements Licensure and Certification Act, for 30 days or longer, and who is a citizen of the United States and has resided in this State and in the election district 30 days next preceding any election shall be entitled to vote in the election district in which any such home or community-integrated living arrangement in which he is an inmate or resident is located, for all officers that now are or hereafter may be elected by the people, and upon all questions that may be submitted to the vote of the people: Provided, that he shall declare upon oath, that it was his bona fide intention at the time he entered said home or community-integrated living arrangement to become a resident thereof.
10 ILCS 5/3-3