10 ILCS 5/29-8

Any person who, prior to, during, or after the counting of ballots or prior to, during, or after the final certification of the vote of any election, knowingly (a) places anything other than a ballot in a ballot box, (b) adds or mixes a forged ballot with other ballots, or (c) adds or mixes a forged application to vote with other applications to vote, shall be guilty of a Class 4 felony.