Politico story at the link.

Pennsylvania Democrats already had a daunting road back to the majority within their own House delegation. Now that Republicans have unveiled their redistricting map, that road is close to a dead end.

The plan, released Tuesday by the GOP-controlled Legislature and expected to be passed largely in its current form, significantly shores up all of the state’s most endangered GOP House members, from the Philadelphia suburbs to the shore of Lake Erie. It assures that Democrats will bear the brunt of the state losing a congressional district by throwing Reps. Jason Altmire and Mark Critz into the same western Pennsylvania seat. In a final insult, it rips the bluest areas out of freshman Rep. Lou Barletta’s northeast Pennsylvania district, putting the Democrats’ top target further out of reach. Former Democratic Rep. Chris Carney, who had wanted to run against Barletta, lives outside the new district.