Atlas of Redistricting Maps

In January of 2018, FiveThirtyEight published a monumental analysis of last cycle’s congressional districts called The Atlas of Redistricting.

They drew a set of alternative congressional maps for the entire country. For each state, they drew seven maps, each with a different goal:

• Match partisan breakdown of seats to electorate
• Promote highly competitive elections
• Maximize number of majority-minority districts
• Make district shapes compact (using an algorithm)
• Make districts compact while following county borders
• Gerrymander districts to favor Republicans, and
• Gerrymander districts to favor Democrats

They used the previous version of DRA to draw the maps and published them on GitHub (repo).

This treasure trove of maps is now available in DRA 2020. To find them:

1. Go to the list of maps
2. Select the Published Maps collection (upper left corner)
3. Then in the search box at the top, filter the published maps using one of these labels: FiveThirtyEight, Cook Political, or Atlas of Redistricting (2018).

The screenshot shows an example.

Filtering Published Maps to The Atlas of Redistricting Maps