Mitch McConnel froze in front of cameras. Several times. Trump has shown signs of confusion and has mis-named people far more than Biden ever has. And this is a Democrat problem why? What steps could they have taken? Who would have been able to win the primary and general elections? Is Biden "hiding" his health or have the Republican-owned media pounced on every small gaffe while ignoring Trump? What has Biden been unable to do? You don't like infrastructure spending, student debt relief, climate regulation, or any of the things Biden has managed to accomplish despite and obstructionist House?
eta: While the race is extremely close, Fivethirtyeight has shown slight movement towards Biden over the last week.