What earlier looked to be more favorable to the partisan interests of Democrats is now, in the words of this analysis, “perhaps best described as the preservation of a Republican-leaning status quo” as a result of court rulings that undid Democratic gerrymanders.

But the loss of competitive seats is the main consequence of this decade’s redistricting, along with maps less favorable to minority voters. And, as the piece points out, pending litigation from Alabama, North Carolina, and elsewhere could alter the terrain even further.