The Supreme Court, taking on new controversy on the eve of opening a new Term, on Thursday stepped into an Arizona case that may settle the future of attempts to take the redrawing of congressional districts out of the hands of legislatures to make that effort non-partisan. If the Court does reach the core issues in the case of Arizona State Legislature v. Arizona Independent Redistricting Commission, and it gave itself a couple of options not to do so, it could make a major difference in the degree to which future membership in the House of Representatives is politically polarized. In recent years, state legislatures dominated by one or the other major political party have carved up districts in ways to help their party’s candidates.
Source: Fate of non-partisan redistricting on the line : SCOTUSblog