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State dataGovernment & Elections
Lobbyist Summary
Published by Public Disclosure Commission · Updated 10/29/2026 · Daily
- Last updated
- 10/29/2026
- First published 09/03/2025
- Update frequency
- Daily
- Formats
- 3
- CSV, JSON, XML
- Coverage
- Washington
- Statewide
About this dataset
This dataset contains information about lobbyists and the totals from all their L2s for a given year.
In the context of this dataset, “lobbyist” refers to a lobbying organization that may employ more than one person who lobbies.
Reporting Format Changes: As of October 30, 2024, the data structure for reporting categories changed. The use_categories field indicates submission format coverage in a given year: 'new' for updated format only, 'legacy' for previous format only, and 'mixed' for both formats present in the same year. See the description of the “use_categories” column for more information.
Data Coverage and Limitations: The data set covers that prior 16 years plus the current election year. Pre-2016 records are available in the separate "Pre-2016 Lobbyist Compensation and Expenses by Source" dataset. This is a best-effort compilation that may contain incomplete or incorrect information. Original reports remain accessible for record verification.
Descriptions attached to this dataset do not constitute legal definitions; please consult RCW 42.17A and WAC Title 390 for legal definitions and additional information regarding political finance disclosure requirements.
CONDITION OF RELEASE: This publication and or referenced documents constitutes a list of individuals prepared by the Washington State Public Disclosure Commission and may not be used for commercial purposes. This list is provided on the condition and with the understanding that the persons receiving it agree to this statutorily imposed limitation on its use. See RCW 42.56.070(9) and AGO 1975 No. 15.
Files and access
Links open the official government source
- CSV downloaddata.wa.govCSV
- JSON (SODA API)data.wa.govJSON
- XMLdata.wa.govXML
API endpoint: https://data.wa.gov/resource/c4ag-3cmj.json
Links open outside websites we do not control.
Frequently asked questions
- Who publishes Lobbyist Summary?
- Public Disclosure Commission, part of State of Washington, publishes this dataset on Washington State Open Data.
- How often is it updated?
- The publisher lists the update frequency as daily. The last update was on 10/29/2026.
- How do I download it?
- It is available as CSV, JSON, XML. Use the links in Files and access, which open the official government source.
Similar data from other publishers
- Lobbyist DirectoryCity and County of San Francisco · Ethics CommissionA. SUMMARY This is a directory of lobbyists registered with the Ethics Commission. Learn more about the lobbyist program at the SF Ethics Commission website. Contact and Expenditure Lobbyists both show up in this dataset. Lobbyists active only prior to 2018 weCSVJSONXMLUpdated 10/24/2026Daily
- Lobbyist Data - LobbyistsCity of ChicagoLobbyists registered with the Chicago Board of Ethics since 2012. Due to requirements for lobbyists to re-register and the importance of showing year for most lobbying-related data, the same lobbyist often will have multiple records. See http://www.cityofchicaCSVJSONXMLUpdated 10/28/2026Daily
- Lobbyist - ClientsCity of AustinThis table lists the clients reported by lobbyists. You can recreate the City Clerk's lobbyist database by downloading all lobbyist datasets on the data portal and view the complete data model of the lobbyist database . This dataset may not receive new data daCSVJSONXMLUpdated 10/29/2026Daily
- Lobbyist - ReportsCity of AustinThis dataset lists each report submitted by a lobbyist. You can recreate the City Clerk's lobbyist database by downloading all lobbyist datasets on the data portal and view the complete data model of the lobbyist database . This dataset may not receive new datCSVJSONXMLUpdated 10/23/2026Daily
- Lobbyist ClientsCity of OaklandThis dataset includes the client information disclosed by lobbyists in Quarterly Lobbyist Activity Reports submitted to the City of Oakland. The dataset only includes data from reports submitted electronically. The data is current as of the last modified date CSVJSONXMLUpdated 10/29/2026
Where this catalog comes from
- Data.gov CatalogU.S. General Services Administration
- State and local open data portalsSocrata Discovery API
- State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
- Government ArcGIS Hub sitesCity and county GIS data
Catalog checked 10/30/2026
We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.
Source: Washington State Open Data and Data.gov · Last updated 10/30/2026 · Listing only; the data stays with the publisher
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