The white/nonwhite crosstab is just getting too on the nose at this point, it's too consistent. More often than not, Biden is at or exceeding his numbers with white voters on a consistent basis, and the same with underperforming with black voters. Neither are reality imo.
In the recent national and PA polls, Biden’s getting much more reasonable 80%+ shares with blacks which are in line with typical QPac polls, whereas in this one he’s at 69%. Unless Biden has a unique problem with Michigan’s black voters that we don’t see elsewhere there are reasons to doubt this poll
