From the very Law360 article you’re citing:

> Ari Savitzky of the American Civil Liberties Union, who represents Lehigh County voters, told Law360 that the high court's vacating of the Third Circuit's ruling was done on "purely procedural grounds."

"As for November, it remains clear that, under state law and federal law, timely mail ballots where a voter merely forgets to handwrite an inconsequential date on the outer envelope must be counted," Savitzky said in an email. "Nothing about today's procedural decision changes that."

The RNC has since asked the state Supreme Court to weigh in on the issue, since the US Supreme Court and the lower state court rulings still left room for doubt in their minds.

The US Supreme Court ruling was not as cut-and-dry as some partisan sources are making it out to be, and the state believes it has its orders from the lower court.