UPDATED Sep. 17, 2021, at 10:46 AM

What Redistricting Looks Like In Every State

An updating tracker of proposed congressional maps — and whether they might benefit Democrats or Republicans in the 2022 midterms and beyond.

Who controls redistricting in Pennsylvania in 2021?
Neither party fully controls the congressional redistricting process. New maps are drawn and passed by the Republican state legislature and signed into law by the Democratic governor.
  • Feb. 15, 2022
    Date that candidates begin filing for congressional runs (therefore map should be set by this date)
partisan lean of districts:
Old map
18 districts
New map
17 districts-1
Latest updates
Icon of the Pennsylvania state boundaries
Sept. 13
Pennsylvania Governor Wolf announces the creation of a Redistricting Advisory Council to provide him guidance when he reviews congressional redistricting plans proposed by the General Assembly over the next several weeks.
Icon of the Pennsylvania state boundaries
July 13
The Legislative Reapportionment Commission launched a new website to hear from Pennsylvania residents and to gather input on Pennsylvania's congressional districts. The Commission also announced that it will hold at least eight public meetings.

Our latest coverage

The competitiveness and fairness of Pennsylvania's maps
Median seat
Difference between the partisan lean of the state’s median district and the state as a whole.
Old mapR+2.3
New map
Efficiency gap
Difference between each party’s share of “wasted votes” — those that don’t contribute to a candidate winning.
Old mapD+1.0
New map
The number of districts in the state whose partisan leans are between R+5 and D+5.
Old map3/18
New map