The authors mention "having built a database of the over 13,000 members of Congress since 1789" but I didn't see a link to their dataset. FWIW, the folks who co

The authors mention "having built a database of the over 13,000 members of Congress since 1789" but I didn't see a link to their dataset. FWIW, the folks who contribute to the Github unitedstates repo has historical data in CSV/JSON form: https://github.com/unitedstates/congress-legislators https://github.com/unitedstates/congress-legislators