On October 31, a U.S. District Court entered a preliminary injunction against a North Dakota law that makes it a crime to try to persuade someone to vote a certain way, if that attempted persuasion takes place on election day. The law has an exception for bumper stickers and billboards. See the decision here. The case is Emineth v Jaeger, 1:12-cv-139. The law has existed in the election law since 1911. Thanks to Rick Hasen for the link.