"The Constitution gives to each state legislature authority to determine the 'Manner' of federal elections...Yet both before and after the 2020 election, nonlegislative officials in various States took it upon themselves to set the rules instead. As a result, we received an unusually high number of petitions and emer- gency applications contesting those changes. The petitions here present a clear example. The Pennsylvania Legislature established an unambiguous deadline for receiving mail-in ballots: 8 p.m. on election day," Thomas wrote. "Dissatisfied, the Pennsylvania Supreme Court extended that deadline by three days. The court also ordered officials to count ballots received by the new deadline even if there was no evi- dence—such as a postmark—that the ballots were mailed by election day. That decision to rewrite the rules seems to have affected too few ballots to change the outcome of any federal election. But that may not be the case in the future. These cases provide us with an ideal opportunity to address just what authority nonlegislative officials have to set elec- tion rules, and to do so well before the next election cycle. The refusal to do so is inexplicable."