If you look at some of these state numbers and figure they are off by quite a bit? Well, you are not the only one.
Nate is banking hard on "post-convention"-bump, it might have been in the past, but not necessarily much of a thing anymore.
Question is, if he will adjust, or double down on it, time will tell.
There's nothing particularly mysterious about Silver's numbers. Harris had a lot of momentum last month because she was new and not Biden. That momentum has since exhausted itself and Trump has made small gains in most swing states. It turns out the Harris convention bump many were expecting actually happened before and during, not after, the convention. The slight percentage disparity in favor of Trump winning is probably down to the simple fact that more things have to go right for her to win, than they do for Trump. If he wins just one rust belt state, her probability of winning suddenly plummets to about 15%, so a lot more can go wrong for her than him.
Still, Silver has the race characterized as a "toss up", which is spot on. We don't know who is winning because most polls are within the margin of error.