Much of Sullivan’s order hinged on postal data showing roughly 300,000 mail-in ballots in several states had not received scans showing they had been delivered. In court filings this week, the Postal Service said that those ballots had been scanned into the U.S. mail system since Oct. 24 but had not been scanned again, including more than 11,000 in Pennsylvania, nearly 16,000 in Florida and more than 6,000 in Michigan. But Postal Service officials said that a missing destination scan does not automatically mean that a ballot was not delivered.