Brennan Center for Justice: Extreme Maps

Extreme Maps
The Brennan Center for Justice at New York University School of Law
By Laura Roydena and Michael Li
May 9, 2017

“Using data from the 2012, 2014, and 2016 election cycles, Extreme Maps finds that partisan bias resulting largely from the worst gerrymandering abuses in just a few battleground states provides Republicans a durable advantage of 16-17 seats in the current Congress, representing a significant portion of the 24 seats Democrats would need to gain control of the House in 2020. These “extreme maps” were all drawn in states under single-party control; the report finds that conversely, maps drawn by independent commissions, courts, or split-party state governments had significantly less partisan bias in their maps.”

Read the full report: https://www.brennancenter.org/sites/default/files/publications/Extreme%20Maps%205.16_0.pdf