They did, unfortunately. SCOTUS had two IL cases with petitions in front of them, the Bevis v Naperville case, and also the Caulkins v Pritzker case.
The Caulkins case challenged the ban under equal protection and some other elements, and seeked to address the issue of campaign financing of two IL Supreme Court judges.
In short, Pritzker, as Governor, donated over $1M to each of two Justices campaigns, exceeding the $500k limited by law (that Pritkzer himself previously passed). This was part of Caulkins original case in the IL courts and he asked the IL Supreme Court to recuse the two Justices (they did not).
After petitioning SCOTUS, Caulkins became aware of an additional $7.3M in undisclosed campaign financing funds, provided by an independent committee, that went solely to the benefit of these same two Justices.
The IL House Speaker, Harmin, personally donated $700k, and his attorney is the head of this committee. Both are named Defendants in the suit. And if I am remembering right, nearly all of the nearly $10m in campaign financing came from named Defendants.
As a further issue, the candidate Justices said publicly they would pass an AWB during the next General Assembly meeting. Wonder of wonders, they did exactly that once elected.