As of late afternoon on October 10, the Pennsylvania Supreme Court has not issued a ruling in the case called In re the Substitute Nomination Certificate of Bob Barr as the Libertarian Candidate for President. Barr is on the ballot in Pennsylvania now, and absentee ballots with his name on it have already been mailed. Last month, the Commonwealth Court had kept Barr on the ballot. One presumes that if the Pennsylvania Supreme Court disagrees with the Commonwealth Court, that it would have acted by now. All the briefs have been before that Court since October 2.
The case against Barr depends on the concept that substitution is never supposed to take place unless the stand-in truly expects to be the ultimate nominee, at least originally. But the substitution process in Pennsylvania and other states, as used for minor party and independent presidential campaigns, has always been about putting a stand-in on the petition who knows that he or she is just a stand-in. The stand-in technique is a device to make it possible for a petition to circulate before the party has held its national convention.