After the release of the 2020 Census, legislatures across the country redrew their states’ congressional district maps, just like they do every decade. And, just like every decade, aggrieved citizens sued them for gerrymandering — the process whereby politicians craft district boundaries to ensure their own parties’ victory.
But this time around, something has changed. A technological revolution, decades in the making, has added a sharp new arrow to those citizens’ quiver of legal arguments. Known as algorithmic redistricting, the technology has persuaded judges to throw out gerrymandered maps in several states, including New York and Ohio.And it will be part of a case before the Supreme Court in October that could play a role in the 2024 election and the future of voting rights.
Here is how it works.