Some Republican dunderheads need to understand that while the Federal Government is a Republic, the only Constitutionally acceptable forms of government at the state level are Democracies. Lots of case history to support this. Congressional district are drawn within state boundaries under state authority and so the rules must follow Democratic processes, not Republican.
Democratic dunderheads need to understand this is also a major stumbling block to non partisan committees drawing up political boundaries. The rules that create these committees must rest on a foundation of democratic processes where voters can act should the committee go off into the weeds. Democratic process are almost impossible to create that don’t enable partisan action.