Bernard Grofman, author, professor at the University of California at Irvine, and an expert witness in a multitude of redistricting cases, published this article in the Washington Post today. In it Grofman offers a way for courts to assess the level of partisan gerrymandering on a district-by-district basis when the challenge is based on the 14th amendment. His assessment is timely, given the Supreme Court’s recent decision in Gill v. Whitford, which rejected challenges to a map as a whole. See our discussion of that here. Grofman points to the court’s line of racial gerrymandering cases as a guide and even a recent state supreme court decision in Pennsylvania.