UPDATED Jan. 27, 2022, at 4:15 PM

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. How this works »

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

The latest in Pennsylvania

Jan. 27, 2022

Pennsylvania faces a stalemate between the Republican-controlled state legislature, which has approved a new congressional map, and Democratic Gov. Tom Wolf, who vetoed the map on Jan. 26.

In response, the Commonwealth Court has fast-tracked a lawsuit and requested map proposals to be submitted by Jan. 24. In all, 13 groups — including the state legislature, Wolf, citizens groups and university professors — submitted map proposals to the court. If Wolf doesn’t sign a legislatively passed map by Jan. 30 (which is extremely unlikely to happen), the court will select a map from the proposals submitted.

Legislative Republicans’ proposed map that passed the House and Senate would create five Democratic-leaning seats, nine GOP-leaning seats and three competitive seats, with a median seat bias of R+6.6 and an efficiency gap of R+3.5. Wolf’s map, would result in six Democratic-leaning seats, eight Republican-leaning seats and three highly competitive seats, with a median seat bias of D+2.7 and an efficiency gap of D+2.9.

The other proposals submitted to the court vary widely in terms of partisanship. The efficiency gaps of the maps range from R+3.6, in the case of a map submitted by a group of Republican voters, to D+8.7 for a map submitted by state House Democrats.

Latest updates
Icon of the Pennsylvania state boundaries
Dec. 9, 2021
The State Government Committee in Pennsylvania's state House selected its preferred congressional map from among 19 that were submitted by the public. The Committee will formally vote on the map next week.
Icon of the Pennsylvania state boundaries
Nov. 30, 2021
Pennsylvania Gov. Wolf published a list of redistricting principles generated by his advisory redistricting council.
Icon of the Pennsylvania state boundaries
Sept. 13, 2021
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.
The competitiveness and fairness of Pennsylvania's maps
All of the proposed maps no longer under consideration in Pennsylvania
MapPlanStatusProposed byPartisan breakdown
Preliminary planTabledRepublican state Rep. Seth Grove / Pennsylvania resident Amanda Holt