The way I read the decision, this sets the stage for a two-pronged approach to minority districts in the next cycle. Prong 1 is Gingles with its three point test, particularly that there is a voting age majority of a single minority in a reasonably compact area that could form a district. That uses a very specific numeric target to establish the need for a VRA district. Prong 2 is the decision today, which when coupled with the VA CD case makes it clear that any use of a numerical standard for a district should be unique to that district and justified by factors like turnout and the extent of bloc voting among whites. Basically it says stay away from numerical standards, but test a proposed VRA district to see that the minority could elect their preferred candidate.
So a universal numerical test cannot be used to draw minority districts, even though such a test must be employed to determine if they are necessary.
So my Milwaukee districts are legal?