Advanced Measures of Bias & Responsiveness

When you click on the Advanced tab in DRA 2020, two sections show many advanced measures of bias & responsiveness.

Tools for Analyzing Maps

DRA 2020 has a rich set of tools for evaluating redistricting maps. Click on the links below, to get more details.

Rank-Votes Graph

The first section you see when you choose the “Advanced” command in DRA 2020 shows a rank-vote graph for the map — a rich, visual way to characterize how fair & competitive the map is.

Proportionality

When you click on “Analytics” in DRA 2020, the “Proportionality” section helps you…

Seats-Votes Curve

When you go to the Advanced tab in DRA 2020, you can see a seats-votes curve for the map — a powerful way to understand how biased & responsive the map is.

Measuring County & District Splitting

This note explains how we adapted Professor Moon Duchin’s metrics for county- &…

Minority Representation

When you click on the “Analytics” command in DRA 2020, the “Minority Representation” section presents data that helps…

Advanced Analytics

When you choose the Advanced tab in DRA 2020, you get in-depth information about the characteristics of the map.

Splitting

When you click on the “Analytics” command in DRA 2020, the “Splitting” section helps you understand the degree to which the districts in…