Who draws the lines?

Note: The map and table below show party control of the congressional lines based on the current configuration of institutions and officeholders, after the 2018 midterm elections. Several governors and thousands of state legislators will be on the ballot in November 2020; the outcome of those elections will likely change this landscape. This page will be updated again after the 2020 elections.

Redistricting status map

Republican control  
Democratic control  
Split control  
Unclear (based on '18 election)  

Party control - congressional lines

The table below shows the partisan control of bodies controlling congressional lines in the 2020 redistricting cycle, reflecting institutions and officeholders after the 2018 elections. The "seats" reflect likely congressional seats given recent growth patterns (but do not attempt to control for the impact of an inaccurate Census). The first three column headers are sortable: just click on the header to sort the data.

State Seats Control Governor Upper House Lower House
Alabama 6 Republican (vetoproof) R 8 D, 26 R, 1 TBD 28 D, 75 R, 2 TBD
Alaska 1 One congressional district -- no redistricting necessary
Arizona 10 Split Bipartisan independent commission
Arkansas 4 Republican (vetoproof) R 9 D, 26 R 22 D, 75 R, 3 TBD
California 53 Split Bipartisan independent commission
Colorado 8 Split Bipartisan independent commission
Connecticut 5 Split (need 66%) No veto 7 D, 5 R, 24 TBD 56 D, 44 R, 37 TBD
Delaware 1 One congressional district -- no redistricting necessary
Florida 29 Republican R 16 D, 23 R, 1 TBD 47 D, 69 R, 4 TBD
Georgia 14 ? ? 20 D, 35 R, 1 TBD 65 D, 101 R, 14 TBD
Hawaii 2 Split Bipartisan politician commission
Idaho 2 Split Bipartisan independent commission
Illinois 17 Democratic (vetoproof) D 39 D, 19 R, 2 TBD 71 D, 45 R, 2 TBD
Indiana 9 Republican (vetoproof) R 9 D, 38 R, 3 TBD 28 D, 65 R, 5 TBD
Iowa 4 Republican R 18 D, 32 R 44 D, 51, 5 TBD R
Kansas 4 Split (maybe) D 9 D, 31 R 37 D, 81 R, 7 TBD
Kentucky 6 Republican (vetoproof) R 10 D, 28 R 35 D, 59 R, 6 TBD
Louisiana 6 Split D 14 D, 25 R 41 D, 61 R
Maine 2 Split (maybe) (need 66%) D 6 D, 1 R, 28 TBD 32 D, 17 R, 104 TBD
Maryland 8 Democratic (override) R 30 D, 14 R, 3 TBD 94 D, 38 R, 2 TBD
Massachusetts 9 Democratic (override) R 29 D, 3 R, 8 TBD 117 D, 26 R, 15 TBD
Michigan 13 Split Bipartisan independent commission
Minnesota 7 Split D 33 D, 34 R 54 D, 41 R, 39 TBD
Mississippi 4 Republican R 19 D, 33 R 48 D, 73 R
Missouri 8 Republican (vetoproof) R 10 D, 24 R 45 D, 116 R, 2 TBD
Montana 1 One congressional district -- no redistricting necessary
Nebraska 3 Nonpartisan R Nonpartisan legislature
Nevada 4 ? ? 9 D, 3 R, 9 TBD 13 D, 4 R, 25 TBD
New Hampshire 2 Split (maybe) R 9 D, 8 R, 7 TBD 184 D, 116 R, 100 TBD
New Jersey 12 Split Bipartisan politician commission
New Mexico 3 Democratic D 26 D, 16 R 42 D, 21 R, 7 TBD
New York 26 Democratic D 35 D, 21 R, 7 TBD 106 D, 41 R, 3 TBD
North Carolina 14 Republican No veto 18 D, 29 R, 3 TBD 53 D, 64 R, 2 TBD
North Dakota 1 One congressional district -- no redistricting necessary
Ohio 15 Republican (vetoproof) R 8 D, 24 R, 1 TBD 36 D, 63 R
Oklahoma 5 Republican (vetoproof) R 9 D, 39 R 26 D, 74 R
Oregon 6 Democratic D 19 D, 13 R, 1 TBD 33 D, 22 R, 5 TBD
Pennsylvania 17 Split D 20 D, 28 R, 2 TBD 92 D, 107 R, 4 TBD
Rhode Island 1 One congressional district -- no redistricting necessary
South Carolina 7 Republican R 19 D, 27 R 43 D, 78 R, 3 TBD
South Dakota 1 One congressional district -- no redistricting necessary
Tennessee 9 Republican (vetoproof) R 5 D, 28 R 26 D, 72 R, 1 TBD
Texas 39 Republican R 12 D, 19 R 67 D, 83 R, 2 U
Utah 4 Republican (maybe) R 2 D, 14 R, 13 TBD 6 D, 15 R, 54 TBD
Vermont 1 One congressional district -- no redistricting necessary
Virginia 11 Split D 19 D, 21 R 49 D, 51 R
Washington 10 Split (maybe) Bipartisan independent commission
West Virginia 2 Republican (vetoproof) R 13 D, 20 R, 1 TBD 36 D, 55 R, 9 TBD
Wisconsin 8 Split D 14 D, 19 R 35 D, 63 R, 1 TBD
Wyoming 1 One congressional district -- no redistricting necessary

Congress State legislature   Maps & Data   States      
     Current status      Current status            Alabama      Indiana      Nebraska      South Carolina
     Timing      Timing            Alaska      Iowa      Nevada      South Dakota
     Authority      Authority   Litigation        Arizona      Kansas      New Hampshire      Tennessee
          Institution           Institution            Arkansas      Kentucky      New Jersey      Texas
          Party control           Party control            California      Louisiana      New Mexico      Utah
     Criteria      Criteria   Reform        Colorado      Maine      New York      Vermont
               Connecticut      Maryland      North Carolina      Virginia
               Delaware      Massachusetts      North Dakota      Washington
               Florida      Michigan      Ohio      West Virginia
         Georgia      Minnesota      Oklahoma      Wisconsin
Overview of redistricting     Further resources        Hawaii      Mississippi      Oregon      Wyoming
Why it matters Redistricting criteria        My work        Idaho      Missouri      Pennsylvania  
Public engagement Preclearance        Tools        Illinois      Montana      Rhode Island