Oklahoma just became the first state liberate, release, free Compilation of district maps over the next decade. These maps are notable in that they use US Census data – not Census data – to balance the population. The maps are also published in the least user-friendly way possible, with no format files or block designation files to facilitate their analysis.
However, PlanScore CEO (and whiz data) Mike Migurski managed to evaluate Partisan effects are possible on the map. And they are brutal. The state map has an expected effective gap in favor of the Republican party of 13%, remaining at double digits in almost any electoral environment. The map of the state senate has an expected effective gap in favor of the Republican party of 15%, also maintaining at the double-digit level in all fundamental electoral conditions. These are surprisingly less points, at the periphery of the historical distribution. They are a preview of the cruel punishment that we can see this cycle in states that have one-sided control over redistribution. And they can explain why Oklahoma is releasing maps in such opaque format – to try to prevent their partisan effects from coming out.