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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

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.

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Where this catalog comes from

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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