GOP is already working on that by their anti-democratic gerrymandering, anti-democratic voter suppression, overturning what voter's voted for by outgoing Republican governors, changing rules in Red State legislatures to undermine incoming Democrat governors, limiting polling places in minority districts, disallowing minority absentee ballots (73% of those disallowed in Georgia were minorities), and so much more.
Minorities being female, or nonwhite, or transgender, or homosexual, or college graduates, or anything other than white males who are employed and heterosexual. The large cities where most of the gerrymandering happens have been run by progressives for at least 50 years. I remember when I lived in the Chicago area that the Democrats gerrymandered the Chicago wards to make sure there were enough black people (that is what they were referred to as way back then) in the right wards to make a voting block of those who would support Mayor Daily, and all his cronies, no matter what color they were. In a few neighboring counties, deals were made to make sure that minorieties had power in certain areas,even when it required a lot of gerrymandering to do so.