The Purcell principle: The murky legal concept that could swing the election
Politico reports: Amy Coney Barrett hasn’t even arrived yet, but the Supreme Court has begun delivering its first big signals of how aggressive a role the court plans to play in setting the rules for next month’s election. The court stepped in Monday night to reinstate a South Carolina ballot witness requirement, even as a Pennsylvania dispute over late-arriving absentee ballots is now teed up for imminent emergency action by the justices. And another simmering fight over voting rules in…