Campaign Legal Center Presents, the Premiere Tool to Measure Gerrymandering

A graph with the title "How Does This Plan Compare?"
The website. Photo by Casey Atkins/Campaign Legal Center.

In preparation for the August 16 release of redistricting data by the U.S. Census Bureau to the states, Campaign Legal Center (CLC) is relaunching, an empowering online tool to measure voting maps and evaluate them for partisan impact.

As the 2021 map drawing cycle heats up, PlanScore will collect and analyze new district plans as they are proposed in states nationwide. The free web tool is intended for map drawers to assist them in ensuring they are creating fair maps, and for policymakers, advocates and journalists to hold map drawers accountable to fair districting standards.

To understand the impact of gerrymandering on our voting maps, we need to be able to measure it. That is where PlanScore comes in. With the help of data from election experts around the country, CLC is expanding this free service to score and publish plans for all 50 states.

The site contextualizes the gerrymandering taking place this cycle by allowing visitors to click on states and compare them to other states or previous maps from the same state. presents the most comprehensive historical dataset of partisan gerrymandering ever assembled, going back to the 1970s.

Visitors to the website can also score new district maps and assess whether the plans are gerrymandered.

Voting districts drawn this year will shape our lives and our communities for the next decade. With PlanScore, people will have the ability to measure partisan gerrymandering directly and map drawers will have a tool to ensure that they draw fair maps.

Corey handles media relations for the CLC voting rights and redistricting teams and creates online content. Follow @cgfromdc on Twitter
Evaluate the Fairness of Proposed District Maps