This is a weird set of polls.
The state-by-state breakdown would actually make perfect sense in an election where the GOP was making historic inroads among black voters, while Democrats improved significantly with whites (both college and non-college educated). Trump does better than you'd expect in all the states with more blacks and underperforms in all the whiter states. Of course this is not happening so what is more likely is that GCS is overpolling white liberals and underpolling minorities.