The ideology scores of US Congress members over time, quantified from how similarly they voted on bills. I present an interactive visualization for the US Congress members’ ideology. The data used are ideology scores of US Congress members 1789-2015. The ideology scores are quantified from the Congress members’ voting records using the DW-NOMINATE method, which puts Congress members with similar voting patterns closer together. This interactive visualization shows a clear picture of the polarization in the US Congress over time, and offers a platform for people to explore the history of ideology changes in congress.

Last modified

• 06/03/2018

Creator

• Vicky Chuqiao Yang

DOI

• https://doi.org/10.21985/N2R714

Keyword

• crd18

Date created

• 2018-04-10

Related url

•  http://crd.northwestern.edu/visualizations/visualizing-the-US-congress/

Resource type

• Dataset

Rights statement

• In Copyright