This is especially true for swing states. “If mail-in balloting is slowing down the process in a few swing states, then we may all be waiting for weeks as those key states count their absentee ballots,” Stetson University law professor Ciara Torres-Spelliscy, who contributed to University of California Irvine’s report of recommendations for preserving a fair presidential election in 2020, told Refinery29. Election Day determines when a vote must be cast, but courts are still litigating when mail-in votes must be received in order to count. In the swing state of Pennsylvania, for example, the state supreme court recently extended the deadline for mail-in ballots to three days after Election Day in order to accommodate potential postal service delays.