Then you have to hope that the system allows you to override your absentee ballot with an in-person ballot, and that your boss or landlord or cult leader doesn't have people watching the polling locations (or watching your movements whenever the polling locations are open).

I admit that's not a perfect system, but it might skew the outcome of the vote less than a system where governors can selectively reduce the number of polling locations, and staff working at them, to produce hour-long lines of people risking catching a potentially deadly disease from each other.