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 - state legislative lines

The table below shows the partisan control of bodies controlling state legislative lines in the 2020 redistricting cycle, reflecting institutions and officeholders after the 2018 elections. 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 35 U, 105 L Republican (vetoproof) R 8 D, 26 R, 1 TBD 28 D, 75 R, 2 TBD
Alaska 20 U, 40 L ? Politician commission
Arizona 30 U, 60 L Split Bipartisan independent commission
Arkansas 35 U, 100 L Republican Republican politician commission
California 40 U, 80 L Split Bipartisan independent commission
Colorado 35 U, 65 L Split Bipartisan independent commission
Connecticut 36 U, 151 L Split (need 66%) No veto 7 D, 5 R, 24 TBD 56 D, 44 R, 37 TBD
Delaware 21 U, 41 L Democratic D 12 D, 9 R 26 D, 15 R
Florida 40 U, 120 L Republican No veto 16 D, 23 R, 1 TBD 47 D, 69 R, 4 TBD
Georgia 56 U, 179 L ? ? 20 D, 35 R, 1 TBD 65 D, 101 R, 14 TBD
Hawaii 25 U, 51 L Split Bipartisan politician commission
Idaho 35 U, 70 L Split Bipartisan independent commission
Illinois 59 U, 118 L Democratic (vetoproof) D 39 D, 19 R, 2 TBD 71 D, 45 R, 2 TBD
Indiana 50 U, 98 L Republican (vetoproof) R 9 D, 38 R, 3 TBD 28 D, 65 R, 5 TBD
Iowa 50 U, 100 L Republican R 18 D, 32 R 44 D, 51, 5 TBD R
Kansas 40 U, 125 L Split (maybe) D 9 D, 31 R 37 D, 81 R, 7 TBD
Kentucky 38 U, 100 L Republican (vetoproof) R 10 D, 28 R 35 D, 59 R, 6 TBD
Louisiana 39 U, 104 L Split D 14 D, 25 R 41 D, 61 R
Maine 34 U, 153 L Split (maybe) (need 66%) D 6 D, 1 R, 28 TBD 32 D, 17 R, 104 TBD
Maryland 47 U, 141 L Democratic No veto 30 D, 14 R, 3 TBD 94 D, 38 R, 2 TBD
Massachusetts 40 U, 158 L Democratic (override) R 29 D, 3 R, 8 TBD 117 D, 26 R, 15 TBD
Michigan 38 U, 109 L Split Bipartisan independent commission
Minnesota 68 U, 134 L Split D 33 D, 34 R 54 D, 41 R, 39 TBD
Mississippi 52 U, 122 L Republican No veto 19 D, 33 R 48 D, 73 R
Missouri 34 U, 163 L Split Bipartisan politician commissions
Montana 50 U, 100 L Split Bipartisan independent commissions
Nebraska 49 Nonpartisan R Nonpartisan legislature
Nevada 21 U, 42 L ? ? 9 D, 3 R, 9 TBD 13 D, 4 R, 25 TBD
New Hampshire 24 U, 398 L Split (maybe) R 9 D, 8 R, 7 TBD 184 D, 116 R, 100 TBD
New Jersey 40 U, 80 L Split Bipartisan politician commission
New Mexico 42 U, 70 L Democratic D 26 D, 16 R 42 D, 21 R, 7 TBD
New York 61 U, 150 L Democratic D 35 D, 21 R, 7 TBD 106 D, 41 R, 3 TBD
North Carolina 50 U, 120 L Republican No veto 18 D, 29 R, 3 TBD 53 D, 64 R, 2 TBD
North Dakota 49 U, 98 L Republican R 9 D, 35 R, 3 TBD 12 D, 82 R, 2 TBD
Ohio 33 U, 98 L Republican Republican politician commission
Oklahoma 48 U, 100 L Republican (vetoproof) R 9 D, 39 R 26 D, 74 R
Oregon 30 U, 60 L Democratic D 19 D, 13 R, 1 TBD 33 D, 22 R, 5 TBD
Pennsylvania 50 U, 202 L Split Bipartisan politician commission
Rhode Island 50 U, 100 L Democratic (vetoproof) D 33 D, 4 R, 1 TBD 65 D, 7 R, 3 TBD
South Carolina 46 U, 124 L Republican R 19 D, 27 R 43 D, 78 R, 3 TBD
South Dakota 35 U, 70 L Republican (vetoproof) R 4 D, 29 R, 2 TBD 6 D, 57 R, 1 TBD
Tennessee 33 U, 98 L Republican (vetoproof) R 5 D, 28 R 26 D, 72 R, 1 TBD
Texas 31 U, 149 L Republican R 12 D, 19 R 67 D, 83 R, 2 U
Utah 29 U, 75 L Republican (maybe) R 2 D, 14 R, 13 TBD 6 D, 15 R, 54 TBD
Vermont 30 U, 149 L Split R 21 D, 4 R, 3 TBD 93 D, 41 R, 13 TBD
Virginia 40 U, 100 L Split D 19 D, 21 R 49 D, 51 R
Washington 49 U, 98 L Split Bipartisan independent commission
West Virginia 34 U, 100 L Republican (vetoproof) R 13 D, 20 R, 1 TBD 36 D, 55 R, 9 TBD
Wisconsin 33 U, 99 L Split D 14 D, 19 R 35 D, 63 R, 1 TBD
Wyoming 30 U, 60 L Republican (vetoproof) R 3 D, 25 R, 2 TBD 5 D, 45 R, 10 TBD

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