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.

Hovering over the state will reveal the party that had been in control of state legislative lines in 2010.

Redistricting status map

Republican control  
Democratic control  
Split control  

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, 27 R 28 D, 77 R
Alaska 20 U, 40 L Republican 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 22 D, 14 R 91 D, 60 R
Delaware 21 U, 41 L Democratic D 12 D, 9 R 26 D, 15 R
Florida 40 U, 120 L Republican No veto 17 D, 23 R 47 D, 73 R
Georgia 56 U, 180 L Republican R 21 D, 35 R 75 D, 105 R
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 40 D, 19 R 74 D, 44 R
Indiana 50 U, 100 L Republican (vetoproof) R 10 D, 40 R 33 D, 67 R
Iowa 50 U, 100 L Republican R 18 D, 32 R 47 D, 53 R
Kansas 40 U, 125 L Republican (vetoproof) D 11 D, 28 R, 1 I 41 D, 84 R
Kentucky 38 U, 100 L Republican (vetoproof) R 9 D, 29 R 39 D, 61 R
Louisiana 39 U, 104 L Split D 14 D, 25 R 39 D, 62 R, 4 I
Maine 35 U, 151 L Split (need 66%) D 21 D, 14 R 89 D, 56 R, 6 I
Maryland 47 U, 141 L Democratic No veto 32 D, 15 R 99 D, 42 R
Massachusetts 40 U, 160 L Democratic (vetoproof) R 34 D, 6 R 127 D, 32 R, 1 I
Michigan 38 U, 109 L Split Bipartisan independent commission
Minnesota 67 U, 134 L Split D 32 D, 35 R 75 D, 59 R
Mississippi 52 U, 122 L Republican No veto 19 D, 33 R 46 D, 73 R, 1 TBD
Missouri 34 U, 163 L Split Bipartisan politician commissions
Montana 50 U, 100 L Split Bipartisan independent commission
Nebraska 49 Nonpartisan R Nonpartisan legislature
Nevada 21 U, 42 L Democratic D 13 D, 8 R 29 D, 13 R
New Hampshire 24 U, 400 L Split R 14 D, 10 R 233 D, 167 R
New Jersey 40 U, 80 L Split Bipartisan politician commission
New Mexico 42 U, 70 L Democratic D 26 D, 16 R 46 D, 24 R
New York 63 U, 150 L Split (need 66%) D 39 D, 22 R, 1 I, 1 TBD 106D, 43 R, 1 I
North Carolina 50 U, 120 L Republican No veto 21 D, 29 R 55 D, 65 R
North Dakota 47 U, 94 L Republican (vetoproof) R 10 D, 37 R 15 D, 79 R
Ohio 33 U, 99 L Republican Republican politician commission
Oklahoma 48 U, 101 L Republican (vetoproof) R 9 D, 39 R 24 D, 77 R
Oregon 30 U, 60 L Democratic D 18 D, 12 R 38 D, 22 R
Pennsylvania 50 U, 203 L Split Bipartisan politician commission
Rhode Island 38 U, 75 L Democratic (vetoproof) D 33 D, 5 R 66 D, 9 R
South Carolina 46 U, 124 L Republican R 19 D, 27 R 44 D, 80 R
South Dakota 35 U, 70 L Republican (vetoproof) R 5 D, 30 R 11 D, 59 R
Tennessee 33 U, 99 L Republican (vetoproof) R 5 D, 28 R 26 D, 73 R
Texas 31 U, 150 L Republican R 12 D, 19 R 67 D, 83 R
Utah 29 U, 75 L Republican (vetoproof) R 6 D, 23 R 16 D, 59 R
Vermont 30 U, 149 L Split R 22 D, 6 R, 2 I 95 D, 43 R, 12 I
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 14 D, 20 R 41 D, 59 R
Wisconsin 33 U, 99 L Split D 14 D, 19 R 36 D, 63 R
Wyoming 30 U, 60 L Republican (vetoproof) R 3 D, 27 R 9 D, 50 R, 1 I

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