Were that to happen, the US would be considered either a “hybrid regime” or “authoritarian” by the Democracy Index.
I mean, the people would still vote for their state legislators, so it's not completely authoritarian.
... but in gerrymandered elections for state pols in which a city like Atlanta might be split to a large extent into narrow cones whose districts extend to the Atlantic Ocean or the state lines so that votes from Greater Atlanta would be diluted. Such would be grossly undemocratic.
The GOP will cheer this until the rural areas in Marjorie Taylor Greene's district continue to shrink and are overpowered by Atlanta and then she loses, goes on a 1 year rant about God and election fraud, and makes the GOP look like an even bigger clown caravan than it already is.