Not that Biden ever had much of a mandate to begin with. In the Rasmussen Poll (the most accurate poll in predicting national election outcomes) Biden has had a hard time getting into majority territory. Which makes you wonder how the hell he "won" the election in the first place. But that's a whole 'nother subject, so let's focus on the figures for now.
Rasmussen's daily Presidential Tracking Poll for today says that only 48% of voters approve of Biden’s job performance while fifty percent (50%) disapprove.