Here is a commentary from UC Davis Law Professor Vikram David Amar on the recent Illinois State Court decision that ruled unconstitutional (for 2024 only) a recent law passed in Illinois that bars “slating,” or the placement of candidates of established parties on General Election ballots, after the Primary date, when a party did not have a candidate in that district who gathered a sufficient number of signatures to appear on the Primary ballot in that district. This was because the court found that the law change was changing the rules in the middle of the election process for 2024.
In future years, the law will be to the detriment of Illinois voters, as there will be fewer contested General Elections in Illinois.