On the final day of the Supreme Court’s term on Monday, they will issue a ruling that could affect as many as one-third of congressional districts — possibly dramatically remaking the partisan makeup of the next Congress ahead of the 2016 elections.
The case at hand, Arizona State Legislature v. Arizona Independent Redistricting, was brought by the Arizona Legislature to try to be able to redraw their congressional districts. That task was instead given to an independent redistricting commission after a state referendum passed in 2000 in an effort to try to take political and partisan concerns out of the map-making process.