Company lists · Data refreshed September 2026

Top 25 Legislative consulting firms based in the United States

Name: Legislative consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 2,430 companies tracked

RevenueBase identified 2,430 company matches for legislative consulting firms associated with the United States as of September 2026 and tracks 23,563 professional contacts across them, including 11,771 with verified work emails and 11,770 with mobile numbers. Washington is the largest hub.

This list covers company matches for legislative consulting firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 4, 2026 How this list was built

2,430Companies

23,563Contacts tracked

11,771Verified emails

11,770Mobile numbers

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The 25 largest legislative consulting firms based in the United States

Ranked by team size

Top 25 of 2,430 company matches for legislative consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 4, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Taft Stettinius & Hollister LLP	Exact match	Cincinnati, IN, United StatesHQ recorded Sep 4, 2026	1,001-5,000	1,963 contacts →
	Exact match “At Taft, we work as one team, driven and committed to helping you succeed.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
2	Venable LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	1,001-5,000	1,791 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
3	Bracewell LLP	Exact match	Houston, TX, United StatesHQ recorded Sep 4, 2026	501-1,000	943 contacts →
	Exact match “Bracewell LLP is a leading law and government relations firm.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
4	Brownstein Hyatt Farber Schreck	Exact match	Denver, NV, United StatesHQ recorded Sep 4, 2026	501-1,000	896 contacts →
	Exact match “For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
5	DDC Public Affairs	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	51-200	411 contacts →
	Exact match “DDC Public Affairs builds communities of advocates that impact policy and win campaigns.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
6	Mercury Public Affairs, LLC	Exact match	New York, FL, United StatesHQ recorded Sep 4, 2026	51-200	395 contacts →
	Exact match “Mercury is a national bipartisan government relations and strategic communications firm.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
7	Mcnees Wallace & Nurick	Exact match	Harrisburg, PA, United StatesHQ recorded Sep 4, 2026	201-500	315 contacts →
	Exact match “Since 1935, McNees Wallace & Nurick has been a trusted, client-focused law firm delivering practical, results-driven legal solutions to businesses, individuals, and organizations.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
8	Cornerstone Government Affairs	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	201-500	256 contacts →
	Exact match “Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
9	BGR Group	Exact match	Washington, TX, United StatesHQ recorded Sep 4, 2026	51-200	236 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
10	SKDK	Exact match	Washington, CA, United StatesHQ recorded Sep 4, 2026	51-200	216 contacts →
	Exact match “SKDK provides strategic advice, public relations, crisis communications, advertising, direct mail, and research to national and international companies, advocacy organizations…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
11	DCI	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	51-200	194 contacts →
	Exact match “DCI Group is an independent public affairs consulting firm that specializes in public relations, crisis management, grassroots engagement, and digital advocacy.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
12	Plus Communications	Exact match	Arlington, VA, United StatesHQ recorded Sep 4, 2026	201-500	189 contacts →
	Exact match “Strategy + Execution = Results.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
13	ASI Government	Exact match	Herndon, VA, United StatesHQ recorded Sep 4, 2026	51-200	186 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
14	Mcallister & Quinn	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	51-200	170 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
15	Invariant	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	51-200	169 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
16	Ripple Effect	Exact match	Rockville, MD, United StatesHQ recorded Sep 4, 2026	201-500	151 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
17	Mcguirewoods Consulting	Exact match	Richmond, SC, United StatesHQ recorded Sep 4, 2026	51-200	128 contacts →
	Exact match “What people say and do in government can have a profound impact on your organization.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
18	Public & Government Affairs At Edelman	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	201-500	125 contacts →
	Exact match “Edelman’s public and government affairs team of consultants are trusted and experienced public affairs advisors-including former government officials, political advisors, policy…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
19	ACTUM	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 4, 2026	51-200	123 contacts →
	Exact match “Actum is a global consulting firm built to solve complex problems at the intersection of business, politics and media.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
20	Government Services Group	Exact match	Nationwide, United StatesHQ recorded Sep 4, 2026	1,001-5,000	121 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
21	Mcking Consulting	Exact match	Fairfax, VA, United StatesHQ recorded Sep 4, 2026	51-200	119 contacts →
	Exact match “McKing Consulting Corporation provides a variety of general and specialized management consulting services to the federal government, state agencies, nonprofits, and public and…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
22	The Cohen Group	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	51-200	111 contacts →
	Exact match “Who We Are A talented team of experts with years of experience in both government and industry, with a passion for finding solutions and a deep understanding of the institutions…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
23	Multistate	Exact match	Arlington, VA, United StatesHQ recorded Sep 4, 2026	51-200	103 contacts →
	Exact match “MultiState is a full-service state and local government relations company.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
24	Stateside Associates	Exact match	Arlington, VA, United StatesHQ recorded Sep 4, 2026	51-200	103 contacts →
	Exact match “Stateside Associates is the largest state and local government affairs firm.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
25	Monument Advocacy	Exact match	Washington, WA, United StatesHQ recorded Sep 4, 2026	51-200	95 contacts →
	Exact match “Monument Advocacy is a bipartisan firm that offers government relations, public affairs, strategic and crisis communications, and digital services.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “legislative consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 2,430 legislative consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 11,771 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legislative consulting firms based in the United States at a glance

As of Sep 4, 2026

50.0%Verified-email coverage

50.0%Mobile-number coverage

9.7Average contacts per company

1-10Median size (employees)

22.1%Largest-city concentration · Washington

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

1,959

11-50

381

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

1,00131–60

6,28961–90

4,43090–180

51180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “legislative consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 11,771 professional contacts with verified work emails across the full matched dataset. 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 4, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Legislative consulting firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “legislative consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legislative consulting firms are there based in the United States?

RevenueBase identified 2,430 company matches for legislative consulting firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Taft Stettinius & Hollister LLP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most legislative consulting firms?

Washington leads with 536 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 11,771 professional contacts with verified work emails tracked across these 2,430 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 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 SmartSearch, 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.