These polls aren’t to be trusted 90% of the time. I could poll my friends and slap it on the right news site and push it as legit.
Most polls don’t express a methodology and it has been realized polls don’t usually reach the young voters. Polling suggested a red wave that never came, twice. Polling had Hillary winning and she didn’t.
In my opinion it is borderline psy op at this point and not something to view as a scientific backbone.
Polling suggest Trump winning could be to scare voters towards Biden or maybe to rally Trumpers into believing they have a shot because a lot of them are pretty demoralized and uninterested in Trump anymore regardless of what they try to sell you. Yeah we all know pro Trump people but at this point there are more anti Biden people and that just isn’t that strong, most Biden voters are anti Biden.