Barring some last-minute federal-court intervention, Pennsylvanians will head to the polls in May and November to elect their representatives based on a district map created under the auspices of the state supreme court. The new map replaces one drawn by the GOP-controlled state legislature — a map rightly characterized as the nation’s most-gerrymandered. GOP leaders are of course crying foul, taking their complaints to both a three-judge federal panel as well as the U.S. Supreme Court. Those cases should be decided in the next few days.

The new map, meanwhile, breaks the GOP’s headlock on Pennsylvania’s congressional delegation, and more accurately represents the state’s partisan spread. It continues to give a slight edge to the GOP, but doesn’t guarantee that party the 13-of-18 seats it’s won during each election since its map went into effect in 2012. Here’s a good roundup of the new map’s many improvements.