According to University of California, Irvine Professor Richard L Hasen, an election-law expert, Trump or state governments could use their emergency powers to drastically curtail in-person voting locations. … Hasen also suggests another more extraordinary, albeit unlikely, scenario. Legislatures, citing concerns about the virus, could take back the power to determine which candidate wins their state in the general election.
US election: Does Trump have power to delay it?
BBC, July 30, 2020
July 30, 2020