You can read the 69-page opinion and the partial dissent at this link.   The majority opinion cites a broad array of materials in supports of its position that the law serves the state’s informational interest.  It discusses not only leading academic articles, but also talks about the Colbert Super PAC.  (It is the first time a court has cited a piece of mine from Slate to the best of my knowledge).

Judge Posner’s partial dissent begins: “I agree with much in the majority opinion, but several provisions of the Illinois statute seem to me to burden the plaintiff’s freedom of speech unduly; we should invalidate them.”