The Washington Post (2018)
Colorado released its first draft of a new map of Congressional districts. We explain its new process and look at other states following the same path. Lawyers from the Princeton Gerrymandering Project and Brennan Center's Democracy Project give us their perspective.
Miami Herald, September 2021 Another non-partisan group, RepresentUS, has teamed up with the Princeton Gerrymandering Project to create the Redistricting Report Card, an algorithm that identifies gerrymandering as it happens and gives states grades on proposed voting maps.
“I mean, I think it’s a little cliché at this point, perhaps, but redistricting is the process by which… legislators are picking their constituents rather than the other way around,” he said. “Which then obviously skews the way the laws are written and the way that laws are passed because if communities are unfairly represented, nobody’s really listening to their voices.” In Texas, public input is allowed. So could average citizens do a better job of drawing these maps? Podowitz-Thomas says citizens with the right tools can.
Sam Wang and Jonathan Cervas are quoted.
The Hill. September 2021
Raleigh News & Observer (2019)
The New York Times (2015)
The Atlantic (2019)
CBS 17, Sep 16, 2021
The New York Times (2018)
The New York Times (2013)
Colorado Sun, September 20, 2021 All three of Colorado’s staff-drawn congressional map proposals earned an “A” for partisan fairness, based on an analysis released Thursday by the Princeton Gerrymandering Project, a nonpartisan group aimed at eliminating gerrymandering. All three Colorado congressional draft maps, however, received a “C” — an average grade — for political competitiveness and geographic features, such as compactness and the number of counties that are divided.
The New York Times (2019)
High-school students win gerrymandering award for designing Ohio congressional map with Democratic majority
Bloomberg Law, August 18, 2021 But those cases “may not move fast enough” to prevent 2022 elections “under maps that are packing minority voters,” said Adam Podowitz-Thomas, senior legal strategist for the Princeton Gerrymandering Project and the Princeton Electoral Innovation Lab.
The American Prospect (2017)
Bloomberg Citylab MapLab, August 18, 2021
After a long history of gerrymandering, Michigan starts to take action with a redistricting commission
The State News, July 30, 2021
Jason Rhode and Sandra Chen are quoted.
The Guardian, August 22, 2021
Some experts say the potential GOP advantage may be overstated because Democrats control the process in a number of states that are losing seats. “They have the latitude toredraw and potentially to eliminate a Republican district,” Samuel Wang, who runs the Princeton Gerrymandering Project, said about Illinois.
Pew, August 2021
AJC, August 2021
Roll Call, August 2021 “There is a nontransparent process … done behind closed doors, and that leads to gerrymandering, leads to the building of districts where there is no competition, and where an individual or an entire party or other group may gain an advantage,” said Sam Wang, director of the Princeton Gerrymandering Project. “We’ve been operating on a different track, and this new track is really something that’s come up in the last five years or so. It’s the possibility that citizens and reform groups can talk back.”
Financial Times, August 12 2021
The Atlantic (2018)
Bangor Daily News, Aug 12, 2021
Roll Call, August 12 2021
The Hill, 08/12/21
Washington Times Herald September 27, 2021
RALEIGH NEWS & OBSERVER, August 2021
Washington Post, August 12, 2021 Indeed, Samuel Wang, the director of the Princeton Gerrymandering Project, has concluded that if Republicans successfully gerrymander, they can win the House if the 2022 national popular vote rivals the 2020 Democratic edge of three points.
The American Prospect (2018)
Spotlight PA, August 18, 2021
Richmond Times-Dispatch (2020)
Single-member legislative districts help small communities. But in WV, they could lead to unfairly-drawn districts
Mountain State Spotlight, August 16, 2021
Atlanta Journal-Constitution A Princeton University study of Georgia’s population found that the partisan gap between the state’s legislative and congressional districts has narrowed, with several seats potentially having competitive races next year
The Kansas City Star, August 2021
NC Policy Watch, August 2021
Washington Post. September 2021.
“I think it’s pretty likely they draw a Democratic gerrymander,” said Adam Podowitz-Thomas of the Princeton Gerrymandering Project, a nonpartisan group that analyzes gerrymandering. “There’s not a huge political cost — when it comes to the ballot box no one picks a politician based on whether they gerrymandered or not.”
Associated Press, September 13, 2021
Atlanta Magazine According to an analysis by Fair Districts GA and the Princeton Gerrymandering Project, two-thirds of Georgia’s 85 small cities are divided into multiple House districts—often with split representation.
The Hill, August 17, 2021
The Los Angeles Times (2017)
CNBC, August 13, 2021
"In some cases, entrants had only rudimentary mapping experience, but had substantial familiarity with local communities, underscoring the importance of public engagement within the mapping process and any public input periods following the upcoming release of redistricting maps," said Hannah Wheelen, data and technology lead for the Princeton Gerrymandering Project.
CNN, August 12, 2021
The American Prospect (2018)
Data & Code (PGP)
A collaborative project to collect precinct geographies and election data from across all 50 states, D.C., and the five U.S. territories, to empower citizens in advance of the 2021 redistricting.
Run the three gerrymandering tests presented on this site, and replicate the analyses reported in Three Tests for Practical Evaluation of Partisan Gerrymandering.
Contains relevant precinct-level results and a demonstrative map for undoing the racially gerrymandered districts in the southeastern corner of Virginia. More detail at our GitHub repository.
Run the three gerrymandering tests presented on this site, as well as several other common gerrymandering metrics.
A loose collection of utilities for various geoprocessing operations that are common in the study of redistricting. Work in progress.
Contains the results of over 80,000 single-member state legislative election from 1971 to 2016.
Cleaned results of each Congressional election from 1948 to 2016.
A community of interest mapping tool created by a team of Princeton undergraduates with help from PGP.
With the adjusted census timeline, states will receive population data needed for redistricting several months later than in previous census cycles. Common Cause details, in this report, the likely impact of this new schedule; in addition to recommendations for ensuring a transparent and inclusive redistricting process.
A 2017 report by the Brennan Center on the district maps produced in the 2011 redistricting cycle.
A free-to-use, public software for drawing and analyzing state legislative and congressional district plans.
A free-to-use, public software created by the Metric Geometry and Gerrymandering Group for drawing state legislative and congressional district plans as well as communities.
A tracker updated by the Brennan Center.
A comprehensive analysis by the Brennan Center of how possible census delays will affect redistricting in 2020.
Visualize the efficiency gap across time, and upload custom district plans for analysis.
Stanford Law Review (2016)
An Antidote for Gobbledygook: Organizing the Judge's Partisan Gerrymandering Toolkit into a Two-Part Framework
Election Law Journal (2018). See also our associated post at the Harvard Law Review Blog.
Eastern District of Virginia, 2018
Univ. of Penn., 22 J. of Const. Law 203 (2019)
Monmouth University Polling Institute
Response to Cho and Liu, “Sampling from complicated and unknown distributions: Monte Carlo and Markov chain Monte Carlo methods for redistricting.”
Physica A (2018)
Supreme Court of the United States, 2019
Election Law Journal (2016)
Supreme Court of the United States, 2017
Supreme Court of the United States, 2015
Data & Code (Non-PGP)
Carl Klarner's collection of state legislature elections from 1967–2016.
Daily Kos Elections maintains an archive of useful data on recent elections, including presidential election results by Congressional and State Legislative district, district maps, demographic information, and much more.
An open-source effort to collect precinct-level geographic shapefiles.
C++ code by Wes Pegden et al. to sample among many similar district maps in order to determine if a map is highly unusual.
An open-source effort to collect precinct-level election results.