A large number of states are drafting new congressional districts in an unusual round of mid-decade redistricting. Democratic and Republican state leaders alike hope the efforts will give their party an edge in November’s midterm elections.
It remains to be seen how much of a factor redistricting will be in determining who controls the House next year. But, in part thanks to a rash of retirements amid the primary contests, it will almost certainly help reshape the House into an even more partisan, ideologically engaged chamber with fewer lawmakers ready to work across the aisle, no matter which party is in the majority.

