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Prof. Justin Levitt's Doug Spencer's Guide to Drawing the Electoral Lines
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Maps across the 2010 cycle

Congress         State Senate      State House / Assembly

 

This is when the congressional maps across the country were put in place during the 2010 cycle.

State Drawn by Party control Finalized Effective start End date
Alabama Legislature Republican 6/8/11 11/21/11 active
Alaska n/a n/a n/a n/a n/a
Arizona Independent commission Split 1/17/12 4/9/12 active
Arkansas Legislature Democratic 4/14/11 4/14/11 active
California Independent commission Split 8/15/11 8/15/11 active
Colorado State court n/a 12/5/11 12/5/11 active
Connecticut State court n/a 2/10/12 2/10/12 active
Delaware n/a n/a n/a n/a n/a
Florida Legislature
State court		 Republican
n/a		 2/16/12
12/2/15		 4/30/12
12/2/15		 12/2/15
active		 Struck by state court
Georgia Legislature Republican 9/6/11 12/23/11 active
Hawaii Politician commission Split 9/26/11 9/26/11 active
Idaho Independent commission Split 10/17/11 10/17/11 active
Illinois Legislature Democratic 6/24/11 6/24/11 active
Indiana Legislature Republican 5/10/11 5/10/11 active
Iowa Legislature Split 4/19/11 4/19/11 active
Kansas Federal court n/a 6/7/12 6/7/12 active
Kentucky Legislature Split 2/10/12 2/10/12 active
Louisiana Legislature Republican 4/14/11 8/1/11 active
Maine Legislature Split 9/28/11 9/28/11 active
Maryland Legislature Democratic 10/20/11 10/20/11 active
Massachusetts Legislature Democratic 11/21/11 11/21/11 active
Michigan Legislature Republican 8/9/11 2/28/12 active
Minnesota State court n/a 2/21/12 2/21/12 active
Mississippi Federal court n/a 12/30/11 12/30/11 active
Missouri Legislature Split 5/4/11 5/4/11 active
Montana n/a n/a n/a n/a n/a
Nebraska Legislature Nonpartisan 5/26/11 5/26/11 active
Nevada State court n/a 10/27/11 10/27/11 active
New Hampshire Legislature Republican 4/23/12 6/22/12 active
New Jersey Politician commission Split 12/23/11 12/23/11 active
New Mexico State court n/a 12/29/11 12/29/11 active
New York Federal court n/a 3/19/12 3/19/12 active
North Carolina Legislature
Legislature
Legislature		 Republican
Republican
Republican		 7/27/11
2/19/16
11/15/19		 11/1/11
2/19/16
11/15/19		 2/19/16
11/15/19
active		 Struck by federal court
Struck by state court
North Dakota n/a n/a n/a n/a n/a
Ohio Legislature
Legislature		 Republican
Republican		 9/26/11
12/15/11		 9/26/11
12/15/11		 12/15/11
active		 Superseded
Oklahoma Legislature Republican 5/10/11 5/10/11 active
Oregon Legislature Split 6/30/11 6/30/11 active
Pennsylvania Legislature
State court		 Republican
n/a		 12/22/11
2/19/18		 12/22/11
2/19/18		 2/19/18
active		 Struck by state court
Rhode Island Legislature Democratic 2/8/12 2/8/12 active
South Carolina Legislature Republican 8/1/11 10/28/11 active
South Dakota n/a n/a n/a n/a n/a
Tennessee Legislature Republican 1/26/12 1/26/12 active
Texas Legislature
Federal court		 Republican
n/a		 7/18/11
2/28/12		 7/18/11
2/28/12		 2/28/12
active		 Struck by federal court
Utah Legislature Republican 10/20/11 10/20/11 active
Vermont n/a n/a n/a n/a n/a
Virginia Legislature
Federal court		 Republican
n/a		 1/25/12
1/7/16		 3/14/12
1/7/16		 1/7/16
active		 Struck by federal court
Washington Independent commission Split 2/7/12 2/7/12 active
West Virginia Legislature Democratic 8/18/11 8/18/11 active
Wisconsin Legislature Republican 8/9/11 8/9/11 active
Wyoming n/a n/a n/a n/a n/a