Every ten years following the decennial census, states redraw congressional and state-legislative district boundaries. Most states give this power to the state legislature itself — meaning sitting legislators draw the maps that determine their own constituencies. A growing number of states have shifted some or all of that authority to independent or bipartisan commissions of citizens or retired judges.
Proponents of commissions argue that legislator-drawn maps create an inherent conflict of interest, producing partisan gerrymanders that entrench majorities, reduce competitive elections, and weaken accountability. They point to court findings of unconstitutional partisan and racial gerrymanders and to commission-drawn maps in states like California, Arizona, and Michigan as proof that independent processes work.
Skeptics argue that commissions are not truly independent — they still involve political appointments and partisan tilt — and that elected legislators are at least accountable to voters in a way that unelected commissioners are not. They also note that some commissions have produced contested or court-overturned maps of their own.