I just read the text of the Voting Rights Act of 1965. It’s all about ensuring the right to vote for nonwhite citizens—no literacy tests, no poll taxes, no intimidation, etc. I didn’t see anything about guaranteeing that nonwhite citizens get the winning candidate of their choice but maybe it’s hidden in the legalese.
“The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of race, color, or previous condition of servitude.”
The Fifteenth Amendment guarantees an individual right to vote. I don’t see ANYTHING here about making contorting district lines into whatever shape or form is necessary to ensure a majority of a particular “race, color, or previous condition of servitude.”