O’Melveny & Myers lawyers have secured a ruling from a Fourth Circuit panel that blocks a grand jury investigation using a North Carolina law that limits candidates’ speech during a campaign in an opinion released Wednesday morning.

“Not only have plaintiffs shown a likelihood of success, ‘it is difficult to imagine them losing,’” wrote Judge Toby Heytens of the U.S. Court of Appeals for the Fourth Circuit, quoting U.S. Supreme Court precedent and sending the fight stemming from a grand jury criminal investigation into state Attorney General Josh Stein back to the trial court with instructions to take the law’s content discrimination into account.