The last 20 or 30 years (i.e., the last 2 or 3 redistrictings) have seen the use of increasing amounts of data and computation to produce more accurately and mo

The last 20 or 30 years (i.e., the last 2 or 3 redistrictings) have seen the use of increasing amounts of data and computation to produce more accurately and more optimally gerrymandered districts. It's fundamentally the same practice that goes back to 1812, but the details actually matter in a quantitative sense.