This is a good observation. Lets not blame all Democrats for Obama's shortsightedness in 2015.
Most of these polls are not accurate...Trump-Clinton is a good example. Hillary was popping out the champagne cork before the election.
Biden is now caught up in a scandal involving his son...and Biden cannot remember where he is most of the times. Its a Harris-Biden ticket and Harris is far to the left.
The polls are definitely fake in favour of the party that hired pollsters to make them look good.