UPDATED Sep. 25, 2021, at 4:25 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 Colorado in 2021?
Neither party fully controls the congressional redistricting process. New maps are drawn and enacted by an independent commission made up of citizens.
  • Oct. 1, 2021
    Deadline to submit final congressional map to state Supreme Court
  • Nov. 1, 2021
    Deadline for state Supreme Court to approve commission's map or send it back for revisions
  • Dec. 15, 2021
    Deadline for state Supreme Court to approve final congressional map
partisan lean of districts:
Old map
7 districts
New map
8 districts+1

The latest in Colorado

Sept. 24, 2021

Colorado’s new independent redistricting committee released its third map proposal on Sept. 23 after listening to more public feedback. The partisan makeup of the new map is quite similar to the previous proposal, although the two most competitive districts have moved slightly more toward Democrats’ and Republicans’ respective corners. The 7th Congressional District now leans Democratic by 6 points, according to FiveThirtyEight’s partisan lean (an increase of 2 points compared to the last map). And the new 8th Congressional District, which was previously even, now leans Republican by 3 points.

Democrats have criticized past iterations of the maps for being too Republican-friendly in a state that has trended reliably Democratic in recent years, and this new iteration is unlikely to allay their concerns. Democrats currently control four of the state’s seven congressional districts. But Colorado is gaining a seat this cycle, and under this proposal the seats could end up being split evenly, four districts favorable to Democrats and four favorable to Republicans.

Like the previous proposal, this map addresses some of the concerns of Hispanic interest groups by creating a district — the 8th — that is 35 percent Hispanic by voting-age population. That may give Hispanic voters in the 8th District a greater likelihood of electing their candidate of choice.

This new iteration of Colorado’s congressional map may also be the one that is ultimately submitted to the state Supreme Court for approval. The commission is scheduled to choose a map to submit on Sept. 28, just a few days before the legal deadline of Oct. 1. If a supermajority of commissioners doesn’t agree on a map, this latest proposal will be the one that is submitted.

Latest updates
Icon of the Colorado state boundaries
Sept. 23
The Colorado Independent Congressional Redistricting Commission released the third congressional staff plan for the states eight congressional districts.
Icon of the Colorado state boundaries
Sept. 15
The Colorado Independent Congressional Redistricting Commission released its second congressional staff plan.
Icon of the Colorado state boundaries
Sept. 7
Colorado Independent Congressional Redistricting Commission released public meeting schedule to review the latest congressional plan. Public must register to submit public comment.

Latest changes 🤖

Our latest coverage

The competitiveness and fairness of Colorado's maps
Median seat
Difference between the partisan lean of the state’s median district and the state as a whole.
Old mapD+5.2
Preliminary planR+1.8
Second staff planR+4.2
Third staff planR+5.0
First staff planR+5.9
New map
Efficiency gap
Difference between each party’s share of “wasted votes” — those that don’t contribute to a candidate winning.
Preliminary planR+0.3
First staff planR+1.4
Second staff planR+1.5
Third staff planR+1.6
Old mapR+5.7
New map
The number of districts in the state whose partisan leans are between R+5 and D+5.
First staff plan2/8
Second staff plan2/8
Preliminary plan1/8
Third staff plan1/8
Old map0/7
New map