Company lists · Data refreshed September 2026

Top 25 Advocacy consulting firms worldwide

Name: Advocacy consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 9,531 companies tracked

RevenueBase identified 9,531 advocacy consulting firms worldwide as of September 2026 and tracks 75,994 professional contacts across them, including 31,685 with verified work emails and 0 with mobile numbers. The United States is the largest market and Washington the largest hub.

This list covers advocacy consulting 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 14, 2026. Country and city lists for advocacy consulting 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 14, 2026 86% judged on-target in blind review

9,531Companies

75,994Contacts tracked

31,685Verified emails

0Mobile numbers

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The 25 largest advocacy consulting firms worldwide

Ranked by team size

Top 25 of 9,531 advocacy consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to advocacy consulting 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	Taft Stettinius & Hollister LLP	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,980 contacts →
	Indirect evidence “At Taft, we work as one team, driven and committed to helping you succeed.” Source: RevenueBase Database · checked Sep 14, 2026
2	Faegre Drinker	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,848 contacts →
	Indirect evidence “Faegre Drinker is a firm designed for clients.” Source: RevenueBase Database · checked Sep 14, 2026
3	APCO	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,578 contacts →
	Partial evidence “APCO is a global advisory and advocacy firm helping organizations build the un/common ground upon which progress is made.” Source: RevenueBase Database · checked Sep 14, 2026
4	Manatt, Phelps & Phillips, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 14, 2026	501-1,000	1,085 contacts →
	Indirect evidence “Forget everything you thought you knew about professional services firms.” Source: RevenueBase Database · checked Sep 14, 2026
5	Porter Novelli	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	821 contacts →
	Indirect evidence “Porter Novelli is the strategic communications company, fueled by innovation, empowering clients to do business better in an ever-changing world.” Source: RevenueBase Database · checked Sep 14, 2026
6	Lee, Brock E Camargo Advogados	Partial evidence	Sao Paulo, BrazilHQ checked Sep 14, 2026	501-1,000	811 contacts →
	Partial evidence “Fundada em 2003, a Lee, Brock, Camargo Advogados é uma associação de profissionais com habilidades multidisciplinares desenvolvidas em escritórios de advocacia e empresas e que…” Source: RevenueBase Database · checked Sep 14, 2026
7	Solomonedwards	Partial evidence	Wayne, PA, United StatesHQ checked Sep 14, 2026	1,001-5,000	557 contacts →
	Partial evidence “For more than 25 years, SolomonEdwards has empowered organizations to tackle common and complex business challenges through strategic advisory, technical advocacy, and hands-on…” Source: RevenueBase Database · checked Sep 14, 2026
8	Boies Schiller Flexner LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	537 contacts →
	Indirect evidence “A firm of internationally recognized trial lawyers, crisis managers, and strategic advisors known for our creative, aggressive, and efficient pursuit of success for our clients.” Source: RevenueBase Database · checked Sep 14, 2026
9	GVA	Indirect evidence	Paris, FranceHQ checked Sep 14, 2026	51-200	499 contacts →
	Indirect evidence “Créé en 1975, GVA est composé de 80 personnes, pour près de 10 millions de chiffre d’affaires.” Source: RevenueBase Database · checked Sep 14, 2026
10	Emperor	Indirect evidence	Aldgate, United KingdomHQ checked Sep 14, 2026	201-500	415 contacts →
	Indirect evidence “Emperor is one of the UK's leading employee-owned creative communications agencies.” Source: RevenueBase Database · checked Sep 14, 2026
11	DDC Public Affairs	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	51-200	411 contacts →
	Partial evidence “DDC Public Affairs builds communities of advocates that impact policy and win campaigns.” Source: RevenueBase Database · checked Sep 14, 2026
12	The Outreach Team	Partial evidence	Ithaca, NY, United StatesHQ checked Sep 14, 2026	201-500	398 contacts →
	Partial evidence “The Outreach Team is a national consulting firm working to make the world a better place.” Source: RevenueBase Database · checked Sep 14, 2026
13	Mercury Public Affairs, LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	390 contacts →
	Indirect evidence “Mercury is a national bipartisan government relations and strategic communications firm.” Source: RevenueBase Database · checked Sep 14, 2026
14	CMM DE LA Calle, Madrazo, Mancera SC	Indirect evidence	Miguel Hidalgo, MexicoHQ checked Sep 14, 2026	n/a	362 contacts →
	Indirect evidence “Somos una empresa consultora en asuntos públicos que conjunta sustancia con forma y traduce pensamiento al considerar gran diversidad de puntos de vista y panoramas.” Source: RevenueBase Database · checked Sep 14, 2026
15	Deep Water Point & Associates	Indirect evidence	Annapolis, MD, United StatesHQ checked Sep 14, 2026	201-500	350 contacts →
	Indirect evidence “Deep Water Point & Associates is composed of industry veterans and government experts who dedicate their expertise to maximize our clients’ competitive edge.” Source: RevenueBase Database · checked Sep 14, 2026
16	DKC	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	349 contacts →
	Indirect evidence “DKC is a full service public relations, marketing and government affairs firm and part of the Acceleration Community of Companies, Based in New York City, and with offices in Los…” Source: RevenueBase Database · checked Sep 14, 2026
17	C & M Consultores S.A.S	Indirect evidence	Bogotá, ColombiaHQ checked Sep 14, 2026	51-200	304 contacts →
	Indirect evidence “C&M Consultores S.A.” Source: RevenueBase Database · checked Sep 14, 2026
18	Berlinrosen, An Orchestra Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	302 contacts →
	Indirect evidence “Built to operate with the speed and intensity of a political campaign, BerlinRosen takes a 360-degree approach to communications, activating audiences and elevating story above…” Source: RevenueBase Database · checked Sep 14, 2026
19	Public Sector Consultants	Indirect evidence	Lansing, MI, United StatesHQ checked Sep 14, 2026	n/a	268 contacts →
	Indirect evidence “Our Mission: Improving the quality of life for residents of Michigan and beyond through the development and implementation of innovative, actionable public policies.” Source: RevenueBase Database · checked Sep 14, 2026
20	SSA Consultants	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 14, 2026	n/a	258 contacts →
	Indirect evidence “We are partners and advisors of leading organizations and governments, bound to and inspired by a mission of helping our clients improve their performance.” Source: RevenueBase Database · checked Sep 14, 2026
21	Cornerstone Government Affairs	Indirect evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	201-500	255 contacts →
	Indirect 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 14, 2026
22	BGR Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	51-200	243 contacts →
	Partial 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 14, 2026
23	Portland	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	201-500	229 contacts →
	Indirect evidence “Portland is a consultancy specialising in public affairs, corporate affairs and geopolitics.” Source: RevenueBase Database · checked Sep 14, 2026
24	Missionwired	Indirect evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	201-500	226 contacts →
	Indirect evidence “At MissionWired, we believe your world-changing cause deserves more than marginal gains.” Source: RevenueBase Database · checked Sep 14, 2026
25	SKDK	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	51-200	220 contacts →
	Partial evidence “SKDK provides strategic advice, public relations, crisis communications, advertising, direct mail, and research to national and international companies, advocacy organizations…” Source: RevenueBase Database · checked Sep 14, 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: advocacy consulting 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 advocacy consulting firms.
Partial evidence: Its own public description names part of advocacy consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advocacy consulting 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 9,531 advocacy consulting firms worldwide

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Advocacy consulting firms worldwide at a glance

As of Sep 14, 2026

41.7%Verified-email coverage

8.0Average contacts per company

1-10Median size (employees)

8.9%Largest-city concentration · Washington

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

7,311

11-50

1,837

51-200

298

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 advocacy consulting 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: 29 countries, largest first: the United States, Brazil, Canada, the United Kingdom, France, Australia, India, Spain, Mexico, Germany and 19 more. Country and city lists for advocacy consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “advocacy consulting 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 advocacy consulting 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 advocacy consulting 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, 31,685 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 14, 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.

Advocacy consulting firms by location

81 lists · largest first

Every Advocacy consulting 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 advocacy consulting 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 advocacy consulting firms are there worldwide?

RevenueBase identified 9,531 advocacy consulting 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?

Taft Stettinius & Hollister LLP, headquartered in Cincinnati, tops this list with the largest team on record.

Which country has the most advocacy consulting firms?

The United States leads with 5,612 companies, followed by Brazil (551) and Canada (406). Every advocacy consulting firms list by country and city is linked on this page.

Which city has the most advocacy consulting firms?

Washington leads with 852 headquartered companies, followed by New York (229) and London (178).

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 31,685 verified decision-maker contacts tracked across these 9,531 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 14, 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.