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 Illinois in 2021?
Democrats fully control the congressional redistricting process. New maps are drawn and passed by the Democratic state legislature and signed into law by the Democratic governor.
  • March 7, 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 Illinois state boundaries
June 18
Gov. Pritzker signed Senate Bill 825 amending the election code and extending the candidate filing deadline in Illinois from November 29, 2021 to March 14, 2022.

Our latest coverage

The competitiveness and fairness of Illinois's maps
Median seat
Difference between the partisan lean of the state’s median district and the state as a whole.
Old mapD+0.3
New map
Efficiency gap
Difference between each party’s share of “wasted votes” — those that don’t contribute to a candidate winning.
Old mapR+0.9
New map
The number of districts in the state whose partisan leans are between R+5 and D+5.
Old map2/18
New map