What's Wrong with the Polls?

[ProfessorGAC]

7. A Few Things

The sampling stratification is an issue.
In the ABC poll, there may have been an abundance of democratic further left who disapprove of Biden not fixing immigration, not raising taxes on the rich, not promoting a wealth tax, not decriminalizing pot, etc.
If that happens dem leading poll responders would be "disapprove" but they'd still vote for him.
If Rasmussen were to have a different stratification, they could preponderantly have more centrist voters who would approve of his presidency.
With all thar said, 15% seems an awfully big delta.