The following is a guest post from Andrew Reiter, a legislative data specialist in the Congressional Research Service (CRS) of the Library of Congress. Andrew previously blogged about an Update on the Congress.gov API, Modernizing Congressional Data – Treaty Documents on Congress.gov, Modernizing Congressional Data – Senate Legislation and Amendments on Congress.gov, and Modernizing Congressional Data – House Legislation and Amendments on Congress.gov.
Today, in partnership with the Office of the Clerk of the U.S. House of Representatives, we are thrilled to announce that beta House Roll Call Votes endpoints are now available from the Congress.gov API.
In this first iteration, the beta House Roll Call Votes endpoints cover all votes associated with legislation dating from 2023 (118th Congress). Endpoints include a list-level and item-level, along with a member votes-level, which shows how each member of the House of Representatives voted on a particular piece of legislation.
The next phase of the House Roll Call Votes beta API endpoints project will include making non-legislation-related votes available in the API, dating from 2023 (118th Congress). These include votes such as the election of the Speaker of the House of Representatives. As with all Congress.gov products, we have also worked to provide documentation about the API. In this case, there are documentation, user guides, a change log that details changes to the API, and opportunities for feedback. As a reminder, to use the API, you must first get an API key.
The Congress.gov API covers all Congress.gov collections, including bills, amendments, summaries, congressional dates, members, the Congressional Record, committee materials, nominations, treaties, and House and Senate Communications.
We are thrilled to share this exciting development with the Congress.gov user community. Be sure to join us for the next Congressional Data Task Force meeting on June 10, 2025, to learn more about the new beta House Roll Call Votes API endpoints.
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