The New Yorker has this article about the lawsuit in Arizona, over whether No Labels can block candidates from running in its primary for Congress and state office.
The article has one small factual error. The lawsuit Unity ’08 v FEC, which ruled that parties without any nominees so far do not need to follow federal campaign finance laws that most parties must follow, was won in the U.S. Court of Appeals, D.C. circuit, not in a U.S. District Court. Thanks to Richard Grayson for the link.