On June 2, the Pennsylvania Commonwealth Court ruled that postal ballots in which the voter forgot to add the date next to the signature on the outer envelope should be counted. McCormick for U.S. Senate v Chapman, 286 MD 2022. The Commonwealth Court relied on both the state constitution and state election law precedents, and also on the “materiality” portion of the federal voting rights Act.
The decision was then sent to the U.S. Supreme Court, which is pondering the issue in a related case dating from a 2021 election. One can read the decision using this link, which is the message to the U.S. Supreme Court.