WASHINGTON (AP) — The Supreme Court on Monday said it will not hear a case out of Pennsylvania related to the 2020 election, a dispute that had lingered while similar election challenges had already been rejected by the justices.

The high court directed a lower court to dismiss the case as moot.

The justices in February, after President Joe Biden’s inauguration, had rejected a handful of cases related to the 2020 election. In the case the court rejected Monday, however, the court had called for additional briefing that was not complete until the end of March.

The case involved a federal court challenge to a Pennsylvania Supreme Court decision requiring election officials to receive and count mailed-in ballots that arrived up to three days after the election. More broadly, however, the case concerned whether state lawmakers or state courts get the last word about the manner in which federal elections are carried out.

The Democratic National Committee was among those that argued the case should be rejected as moot because the 2020 election is over. Those that brought the case said the justices should hear it because the issues involved are important and recurring.

The court had previously rejected other cases that had involved the Pennsylvania Supreme Court’s decision to extend the deadline for mail-in ballots. Three of the court’s conservative justices dissented, saying they would have taken up the cases.