Recently, Pennsylvania state officials filed briefs in each of the two pending ballot access cases. Here is the brief in Constitution Party of Pennsylvania v Aichele, a case over the Pennsylvania system of putting petitioning groups at risk of paying court costs of up to $110,000 if they submit a petition that lacks enough signatures.
Here is the brief in Green Party of Pennsylvania v Aichele, which challenges many other ballot access laws, including the ban on out-of-state circulators. Both cases are in U.S. District Court in the eastern district. Each case has a separate judge.