Welcome, former Sunlight Congress API users! We want you to be able to use the ProPublica Congress API for your projects, and are here to try and help make the transition process easier. ProPublica took over the Sunlight Congress API in Nov. 2016 and was sun-setted on Oct. 1, 2017. In between, we’ve added support for many Sunlight Congress API features to the ProPublica Congress API. We post about that work on our Nerd Blog and offer a changelog of updates as well.

Important Things To Know

The ProPublica Congress differs from the Sunlight Congress API in several important respects: