The bar was set very low. Trump has to be very careful to not to bully a person clearly suffering from dementia. It’s hard to keep your patience at times as anyone in that situation knows.
Trump has a lot of ammo to use on Joe. GOP Opposition research must be working over time to keep up with all the garbage he has spewed or been in as a Senator and VP. Trump can calmly use Joe's own comments and actions against him and never once touch on the dementia. If Joe become frustrated and incoherent people will see that. If he handles it well, it is not going to change minds because Trump will hammer home his decades of sexism, racism and missteps. Biden’s own manifesto on his website has enough in it to scare suburban moms who are the least informed voters we have. I am going to pay for that one, but if they were better informed, why does the RATS always play on their emotions and succeed? Don't forget, early voting is starting in many places before the first debate. I am not even sure the debates mean anything.