@Bumber
From afar, and notwithstanding that it is very much not how I'd like it to be, right now, the fact that it hasn't been some new batshit episode Every. Single. Day (or more than once a day, often), since his taking up the post, probably isn't the best of baselines, and I really don't want to be an apologist for any error...
But imagine how much better Trump's presidency might have been if there had only been that issue with the unmarked vans/snatch-squads targetting innocent Americans in Portland, or any other single policy outcome we can mutually agree was an actual low-point that you aren't going to say didn't happen/etc.
I can think of single-low-point candidate events for Obama, Dubya (excluding 911 itself, on principle), Clinton, Aichdubya, Reagan, Carter, just from memory. Before that I'd need to read up on them a bit (though of course Nixon's got a doozy or two, JFK must have even if Dallas happened before they were properly known, etc, I think I've got a Taft one but I might be wrong about it being him...).
Too early to say, though. The current problem might turn out to be nothing but panic-induced mania or utterly eclipsed with some different big issue (Taiwan? Something hurricane/other-weather/quake-related? ISS problems?) that makes even you forget about this hiccough. The big test of opinion is 2024, if that schedule isn't disrupted (perhaps due to The Problem)... Place yer bets, ladies and gentlemen..!
(@Kagus: Not my system, to rightly comment upon, but my understanding is that there are loads of local (mostly State) variations on exactly how voting progresses, but there is indeed a large quantity of in-person early-voting built in, rather than the main exception to on-the-day being only postal votes (that accumulate, to be counted alongside the others). I think it's a holdover from days of yore, with a big continent/swathes of continent involved and never quite been updated as Pony Express, etc, were no longer the only solution. That and other reluctance to change what works and does not disproportionately upset the legislative apple-carts involved. But someone(s) else will probably give you a better answer than this overlong summary, I'm sure.)