Vote-by-mail is an option that’s fraught with risks, but it’s probably worth including in the mix — as an option. “Risks”: at the top of the list, first, the US Postal Service is craptacularly unreliable. “The check is in the mail” doesn’t mean “You can rely on it”, at least not in the US. Second, vote-by-mail introduces multiple gaps in the chain-of-custody of ballots both while ballots are blank and after ballots have been filled in. Either of these risks is fatal. But let’s be realistic about current events: COVID-19 can also be fatal.
I live (and historically have lived) in a multiple-dwelling building. It’s common to see pieces of first-class mail addressed to other buildings left by residents on the counter in front of the mail boxes. It’s an informal sample, but it begins to transition from one person’s anecdote to events from which reliable conclusions can be drawn, and speaking of ‘reliable’ that word simply doesn’t apply to the US Postal Service. I wish it were otherwise, but it isn’t.