Company lists · Data refreshed September 2026

Top 25 State government relations firms worldwide

Name: State government relations firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 1,925 companies tracked

RevenueBase identified 1,925 state government relations firms worldwide as of September 2026 and tracks 13,044 professional contacts across them, including 5,611 with verified work emails. The United States is the largest market and Washington the largest hub.

This list covers state government relations firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026. Country and city lists for state government relations firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

1,925Companies

13,044Contacts tracked

5,611Verified emails

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The 25 largest state government relations firms worldwide

Ranked by team size

Top 25 of 1,925 state government relations firms worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to state government relations firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	DDC Public Affairs	Indirect evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	411 contacts →
	Indirect evidence “DDC Public Affairs builds communities of advocates that impact policy and win campaigns.” Source: RevenueBase Database · checked Sep 22, 2026
2	Cornerstone Government Affairs	Strong evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	201-500	255 contacts →
	Strong evidence “Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…” Source: RevenueBase Database · checked Sep 22, 2026
3	BGR Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	243 contacts →
	Indirect evidence “The Services You Need BGR Group offers an integrated suite of bipartisan lobbying, strategic communications and advocacy solutions that help meet challenges in a risky…” Source: RevenueBase Database · checked Sep 22, 2026
4	State Government Affairs Council Sgac	Strong evidence	Alexandria, VA, United StatesHQ checked Sep 22, 2026	n/a	200 contacts →
	Strong evidence “The State Government Affairs Council (SGAC) is the premier national association for multi-state government affairs professionals of major U.S.” Source: RevenueBase Database · checked Sep 22, 2026
5	Mcguirewoods Consulting	Partial evidence	Richmond, VA, United StatesHQ checked Sep 22, 2026	51-200	127 contacts →
	Partial evidence “What people say and do in government can have a profound impact on your organization.” Source: RevenueBase Database · checked Sep 22, 2026
6	Cattaneo Zanetto & CO	Indirect evidence	ItalyHQ checked Sep 22, 2026	51-200	104 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
7	Multistate	Strong evidence	Arlington, VA, United StatesHQ checked Sep 22, 2026	51-200	104 contacts →
	Strong evidence “MultiState is a full-service state and local government relations company.” Source: RevenueBase Database · checked Sep 22, 2026
8	Stateside Associates	Strong evidence	Arlington, VA, United StatesHQ checked Sep 22, 2026	51-200	102 contacts →
	Strong evidence “Stateside Associates is the largest state and local government affairs firm.” Source: RevenueBase Database · checked Sep 22, 2026
9	Powers LAW	Indirect evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	101 contacts →
	Indirect evidence “Powers Pyles Sutter & Verville PC is a Washington, DC-based law firm that began with a strong focus on healthcare law and healthcare policy and has gradually expanded capabilities…” Source: RevenueBase Database · checked Sep 22, 2026
10	Monument Advocacy	Strong evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	97 contacts →
	Strong evidence “Monument Advocacy is a bipartisan firm that offers government relations, public affairs, strategic and crisis communications, and digital services.” Source: RevenueBase Database · checked Sep 22, 2026
11	Justice Works Youth Care	Strong evidence	Rochester, PA, United StatesHQ checked Sep 22, 2026	51-200	96 contacts →
	Strong evidence “Justice Works Youth Care is a Government Relations company located in 615 Virginia Ave, Rochester, Pennsylvania, United States.” Source: RevenueBase Database · checked Sep 22, 2026
12	Kasirer LLC	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	11-50	88 contacts →
	Partial evidence “Kasirer is NYC's #1 lobbying firm, navigating government on behalf of private sector & nonprofit clients.” Source: RevenueBase Database · checked Sep 22, 2026
13	TFG The Ferguson Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	11-50	84 contacts →
	Indirect evidence “Founded in 1982, The Ferguson Group has a proud record of success advocating on behalf of local communities.” Source: RevenueBase Database · checked Sep 22, 2026
14	VAN Scoyoc Associates	Partial evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	82 contacts →
	Partial evidence “For more than 30 years, Van Scoyoc Associates (VSA) has been developing and executing tailored government affairs strategies for its clients.” Source: RevenueBase Database · checked Sep 22, 2026
15	Cassidy & Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	79 contacts →
	Indirect evidence “At Cassidy and Associates, we make Washington work for you.” Source: RevenueBase Database · checked Sep 22, 2026
16	Florio Perrucci Steinhardt Cappelli & Tipton LLC	Indirect evidence	Easton, PA, United StatesHQ checked Sep 22, 2026	51-200	77 contacts →
	Indirect evidence “Florio Perrucci Steinhardt Cappelli & Tipton LLC was founded on the belief that business objectives can only be achieved by combining strategic and aggressive legal advocacy with…” Source: RevenueBase Database · checked Sep 22, 2026
17	Sussex Strategy Group	Strong evidence	Toronto, ON, CanadaHQ checked Sep 22, 2026	51-200	77 contacts →
	Strong evidence “Established in 1998, Sussex Strategy Group is Canada’s leading government relations, strategic communications, digital advocacy and business advisory agency.” Source: RevenueBase Database · checked Sep 22, 2026
18	The Southern Group-Florida	Indirect evidence	Tallahassee, FL, United StatesHQ checked Sep 22, 2026	51-200	72 contacts →
	Indirect evidence “Every day across Florida, throughout our network of 60+ lobbyists, we are navigating Tallahassee, advancing interests, amplifying voices, influencing decision makers, cutting…” Source: RevenueBase Database · checked Sep 22, 2026
19	HB Strategies	Partial evidence	Jefferson City, MO, United StatesHQ checked Sep 22, 2026	51-200	71 contacts →
	Partial evidence “HBS creates an encouraging public landscape through its integrated services of state and federal lobbying, leadership strategies, and public affairs” Source: RevenueBase Database · checked Sep 22, 2026
20	Thorn RUN Partners	Partial evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	69 contacts →
	Partial evidence “Established in 2010, Thorn Run Partners is a leading Washington, DC-based government affairs firm whose members are Capitol Hill veterans with over a century’s experience in…” Source: RevenueBase Database · checked Sep 22, 2026
21	Bose Public Affairs Group	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 22, 2026	11-50	66 contacts →
	Indirect evidence “Bose Public Affairs Group successfully advocates for our clients’ legislative, regulatory, procurement, political and communication interests with offices in Indianapolis and…” Source: RevenueBase Database · checked Sep 22, 2026
22	Capitol Counsel, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	11-50	63 contacts →
	Strong evidence “Capitol Counsel, LLC is a full service government relations firm providing political analysis, strategic advice and advocacy services.” Source: RevenueBase Database · checked Sep 22, 2026
23	The Advance Group TAG	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	11-50	62 contacts →
	Indirect evidence “Founded and led by Scott Levenson since 1990, TAG is a diverse team working together to deliver results.” Source: RevenueBase Database · checked Sep 22, 2026
24	GR Japan	Strong evidence	Tokyo, JapanHQ checked Sep 22, 2026	51-200	62 contacts →
	Strong evidence “GR Japan is the leading government relations and public affairs firm in Tokyo.” Source: RevenueBase Database · checked Sep 22, 2026
25	California Strategies	Indirect evidence	Sacramento, CA, United StatesHQ checked Sep 22, 2026	11-50	60 contacts →
	Indirect evidence “CALIFORNIA STRATEGIES, LLC is a full-service public affairs consulting firm dedicated to successfully navigating clients through the myriad pathways of California's political…” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: state government relations firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names state government relations firms.
Partial evidence: Its own public description names part of state government relations firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name state government relations firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,925 state government relations firms worldwide

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State government relations firms worldwide at a glance

As of Sep 22, 2026

43.0%Verified-email coverage

6.8Average contacts per company

1-10Median size (employees)

16.1%Largest-city concentration · Washington

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

1,580

11-50

277

51-200

201-500

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among state government relations firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for state government relations firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “state government relations firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names state government relations firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among state government relations firms, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 5,611 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

State government relations firms by location

8 lists · largest first

Every State government relations firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names state government relations firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many state government relations firms are there worldwide?

RevenueBase identified 1,925 state government relations firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

DDC Public Affairs, headquartered in Washington, tops this list with the largest team on record.

Which country has the most state government relations firms?

The United States leads with 1,381 companies, followed by Canada (39). Every state government relations firms list by country and city is linked on this page.

Which city has the most state government relations firms?

Washington leads with 309 headquartered companies, followed by Sacramento (72) and Austin (57).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,611 verified decision-maker contacts tracked across these 1,925 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.