Company lists · Data refreshed September 2026

Top 25 Legislative consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 3,450 companies tracked

RevenueBase identified 3,450 legislative consulting firms worldwide as of September 2026 and tracks 32,503 professional contacts across them, including 14,721 with verified work emails and 12,235 with mobile numbers. The United States is the largest market and Washington the largest hub.

This list covers legislative 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 4, 2026. Country and city lists for legislative 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 4, 2026 86% judged on-target in blind review

3,450Companies

32,503Contacts tracked

14,721Verified emails

12,235Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest legislative consulting firms worldwide

Ranked by team size

Top 25 of 3,450 legislative consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to legislative 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, IN, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,963 contacts →
	Indirect evidence “At Taft, we work as one team, driven and committed to helping you succeed.” Source: RevenueBase Database · checked Sep 4, 2026
2	Venable LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,791 contacts →
	Indirect evidence “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Source: RevenueBase Database · checked Sep 4, 2026
3	Bracewell LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	501-1,000	943 contacts →
	Indirect evidence “Bracewell LLP is a leading law and government relations firm.” Source: RevenueBase Database · checked Sep 4, 2026
4	Brownstein Hyatt Farber Schreck	Indirect evidence	Denver, NV, United StatesHQ checked Sep 4, 2026	501-1,000	896 contacts →
	Indirect evidence “For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.” Source: RevenueBase Database · checked Sep 4, 2026
5	DDC Public Affairs	Indirect evidence	Washington, DC, United StatesHQ checked Sep 4, 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 4, 2026
6	Mercury Public Affairs, LLC	Indirect evidence	New York, FL, United StatesHQ checked Sep 4, 2026	51-200	395 contacts →
	Indirect evidence “Mercury is a national bipartisan government relations and strategic communications firm.” Source: RevenueBase Database · checked Sep 4, 2026
7	CAL Y Mayor	Partial evidence	MexicoHQ checked Sep 4, 2026	501-1,000	336 contacts →
	Partial evidence “International consulting firm dedicated to enhance goverment relations, academy and industrial projects, in private and public sectors.” Source: RevenueBase Database · checked Sep 4, 2026
8	Mcnees Wallace & Nurick	Indirect evidence	Harrisburg, PA, United StatesHQ checked Sep 4, 2026	201-500	315 contacts →
	Indirect evidence “Since 1935, McNees Wallace & Nurick has been a trusted, client-focused law firm delivering practical, results-driven legal solutions to businesses, individuals, and organizations.” Source: RevenueBase Database · checked Sep 4, 2026
9	Cornerstone Government Affairs	Indirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	201-500	256 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 4, 2026
10	BGR Group	Indirect evidence	Washington, TX, United StatesHQ checked Sep 4, 2026	51-200	236 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 4, 2026
11	SKDK	Indirect evidence	Washington, CA, United StatesHQ checked Sep 4, 2026	51-200	216 contacts →
	Indirect 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 4, 2026
12	DCI	Partial evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	194 contacts →
	Partial evidence “DCI Group is an independent public affairs consulting firm that specializes in public relations, crisis management, grassroots engagement, and digital advocacy.” Source: RevenueBase Database · checked Sep 4, 2026
13	Plus Communications	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	201-500	189 contacts →
	Indirect evidence “Strategy + Execution = Results.” Source: RevenueBase Database · checked Sep 4, 2026
14	ASI Government	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 4, 2026	51-200	186 contacts →
	Indirect evidence “For nearly two decades, ASI Government has served as a trusted advisor to government leaders seeking to improve mission performance, enhance organizational effectiveness and drive…” Source: RevenueBase Database · checked Sep 4, 2026
15	TACT	Partial evidence	Québec, QC, CanadaHQ checked Sep 4, 2026	51-200	174 contacts →
	Partial evidence “Founded in September 2011, TACT Intelligence-conseil is composed of a group of experienced, professional communicators seeking to create a Québec-owned consulting agency.” Source: RevenueBase Database · checked Sep 4, 2026
16	Mcallister & Quinn	Partial evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	170 contacts →
	Partial evidence “McAllister & Quinn is a Washington, DC consulting firm that provides a comprehensive range of services to a diverse group of clients with issues before the federal government.” Source: RevenueBase Database · checked Sep 4, 2026
17	Invariant	Indirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	169 contacts →
	Indirect evidence “Invariant is a bipartisan business advisory firm, providing strategic advice to companies, trade associations, non-profits, and individuals on how to make Washington work for them.” Source: RevenueBase Database · checked Sep 4, 2026
18	Political Intelligence Brussels	Indirect evidence	Brussels, BelgiumHQ checked Sep 4, 2026	n/a	167 contacts →
	Indirect evidence “Political Intelligence is an independent public affairs consultancy, with offices in Brussels, Lisbon, London, Madrid.” Source: RevenueBase Database · checked Sep 4, 2026
19	Finsbury Glover Hering	Indirect evidence	Dusseldorf, United StatesHQ checked Sep 4, 2026	501-1,000	166 contacts →
	Indirect evidence “We are now FGS Global.” Source: RevenueBase Database · checked Sep 4, 2026
20	Ripple Effect	Partial evidence	Rockville, MD, United StatesHQ checked Sep 4, 2026	201-500	151 contacts →
	Partial evidence “Ripple Effect provides professional consulting and exceptional talent for federal, private, and non-profit clients to deliver some of the most crucial policies and programs that…” Source: RevenueBase Database · checked Sep 4, 2026
21	BMJ Consultores Associados	Partial evidence	Brasilia, BrazilHQ checked Sep 4, 2026	51-200	141 contacts →
	Partial evidence “BMJ & Associates is a Brazilian consulting firm specialized in International Trade, Government Affairs, Tax Analysis, Strategic Communication and Regulatory Affairs.” Source: RevenueBase Database · checked Sep 4, 2026
22	Mcguirewoods Consulting	Indirect evidence	Richmond, SC, United StatesHQ checked Sep 4, 2026	51-200	128 contacts →
	Indirect evidence “What people say and do in government can have a profound impact on your organization.” Source: RevenueBase Database · checked Sep 4, 2026
23	Strategycorp	Partial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	127 contacts →
	Partial evidence “StrategyCorp provides government relations, strategic communications, and management consulting strategic counsel to the leadership of organizations across Canada, the United…” Source: RevenueBase Database · checked Sep 4, 2026
24	Global Counsel	Indirect evidence	Doha, United KingdomHQ checked Sep 4, 2026	51-200	125 contacts →
	Indirect evidence “Global Counsel is an advisory firm that works with clients to navigate the critical area between business, politics and policymaking.” Source: RevenueBase Database · checked Sep 4, 2026
25	Public & Government Affairs At Edelman	Indirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	201-500	125 contacts →
	Indirect evidence “Edelman’s public and government affairs team of consultants are trusted and experienced public affairs advisors-including former government officials, political advisors, policy…” Source: RevenueBase Database · checked Sep 4, 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: legislative 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 legislative consulting firms.
Partial evidence: Its own public description names part of legislative consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name legislative 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 3,450 legislative consulting firms worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 14,721 reachable decision-makers.

Free signup · no credit card

View the full list →

Legislative consulting firms worldwide at a glance

As of Sep 4, 2026

45.3%Verified-email coverage

37.6%Mobile-number coverage

9.4Average contacts per company

1-10Median size (employees)

15.5%Largest-city concentration · Washington

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

2,668

11-50

629

51-200

112

201-500

501-1,000

1,001-5,000

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 legislative 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: 12 countries, largest first: the United States, Canada, Brazil, Australia, the United Kingdom, Mexico, France, Belgium, Germany, the Netherlands and 2 more. Country and city lists for legislative consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “legislative 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 legislative 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 legislative 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, 14,721 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 between September 4, 2026 and 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.

Legislative consulting firms by location

33 lists · largest first

Every Legislative 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 legislative 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 legislative consulting firms are there worldwide?

RevenueBase identified 3,450 legislative 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 Indianapolis, tops this list with the largest team on record.

Which country has the most legislative consulting firms?

The United States leads with 2,430 companies, followed by Canada (171) and Brazil (157). Every legislative consulting firms list by country and city is linked on this page.

Which city has the most legislative consulting firms?

Washington leads with 536 headquartered companies, followed by Sacramento (90) and Austin (79).

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 14,721 verified decision-maker contacts tracked across these 3,450 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 4, 2026 and September 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,450 legislative consulting firms worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.