bargameslancaster 2019 04 3 photos by lancaster online should attribute credit to chris knight

Draw congressional and legislative maps

In 2021, PA will draw its voting districts for real. Draw your map to join the process. 

How do i do it?

Draw the Lines empowers you to make valid Pennsylvania congressional or state legislative maps. Then you can share your congressional map with the General Assembly, and your legislative maps with the Legislative Reapportionment Commission.

A helpful word of advice. Before diving in, first take the three steps below. If you have any questions, Contact Us.

Step 1: Think

Your map should reflect your goals and values. There is no right answer, no one perfect map. What are your goals?  This exercise helps you figure them out. 

Step 2: Use the guide

A lot goes into making a valid map. The developers of DistrictBuilder put together this User Guide. It offers guidance for getting the mapping tool to do what you want.

Step 3: Start mapping

David Thornburgh, president and CEO of Committee of Seventy, guides users through the basics of DTL's mapping software.

Video introduction to DistrictBuilder with David Thornburgh.

DistrictBuilder was designed by Azavea, a Philadelphia software engineering and data analysis firm that focuses on projects related to geography and place. An earlier version, deployed in 2011 as part of  the Public Mapping Project, helped run mapping competitions in 11 states.