CEC filed an amicus brief in RNC v. Eakin (No. 25-962), urging the Supreme Court to grant the petition for a writ of certiorari and reverse the Third Circuit’s decision in Eakin v. Adams County Board of Elections—which held that the First and Fourteenth Amendments prohibit Pennsylvania county election boards from rejecting mail-in ballots that arrive with missing or incorrect dates on return envelopes.