Company lists · Data refreshed November 2026
Top 25 Constituent services firms worldwide
RevenueBase identified 238 company matches for constituent services firms worldwide as of November 2026 and tracks 2,276 professional contacts across them, including 954 with verified work emails. The United States is the largest market and Washington the largest hub.
This list covers company matches for constituent services firms worldwide, 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 November 6, 2026. Country and city lists for constituent services firms follow the table.
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.
The 25 largest constituent services firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 276 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 196 contacts → | ||||
Exact match “Strategy + Execution = Results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 96 contacts → | ||||
Exact match “Founded in 1982, The Ferguson Group has a proud record of success advocating on behalf of local communities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 68 contacts → | ||||
Exact match “Bose Public Affairs Group successfully advocates for our clients’ legislative, regulatory, procurement, political and communication interests with offices in Indianapolis and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 64 contacts → | ||||
Exact match “State and Federal Communications, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 59 contacts → | ||||
Exact match “We are innovators and thought leaders who believe in developing robust integrated solutions for our clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 55 contacts → | ||||
Exact match “Founded in January 2001 by Gabriel Guerra Castellanos, GC & A is a specialized consulting firm that offers strategic communication, lobbying, as well as government and community…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 35 contacts → | ||||
Exact match “Crossroads Strategies, LLC (CRS) is a bipartisan, multi-disciplinary federal relations, advocacy, and advisory firm based in Washington DC.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 33 contacts → | ||||
Exact match “Duane Morris Government Strategies LLC (DMGS) offers a full range of government affairs services, including legislative, executive branch, and grassroots lobbying; rulemaking…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 33 contacts → | ||||
Exact match “Based in Southern California, VENCER Public Affairs & Strategy offers one thing: overcoming all odds and getting the job done.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 32 contacts → | ||||
Exact match “WSW is an independent bipartisan federal government relations firm with a proven track record of success representing corporate, non-profit and public sector clients in the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 31 contacts → | ||||
Exact match “American Defense International, Inc.(ADI) serves a worldwide client base with a unique combination of technical expertise and the ability to work with Washington's most important…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 27 contacts → | ||||
Exact match “ACG Advocacy is one of Washington's premier bipartisan government affairs and strategic consulting firms.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 27 contacts → | ||||
Exact match “MBI, one of New Jersey’s largest public affairs firm, offers its clients more than 300 years of combined experience in state and local government relations and public relations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 25 contacts → | ||||
Exact match “Constituent Services Worldwide Public Benefit Corporation is a company based out of 201 Massachusetts Ave Suite B1, WASHINGTON, District of Columbia, United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 24 contacts → | ||||
Exact match “Baker Group Strategies is a full-service firm with a record of winning campaigns under the most challenging circumstances.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 21 contacts → | ||||
Exact match “Originally founded in Texas, Murphy Nasica & Associates (MNA) is a political consulting firm that represents clients at every level of government: municipal, state and federal.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 20 contacts → | ||||
Exact match “Harnessing the power of Advocacy, Law, Politics & the Press.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 19 contacts → | ||||
Exact match “Princeton Public Affairs Group (PPAG) is the largest state lobbying firm in the country.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 19 contacts → | ||||
Exact match “Montagne Powers is the region's leading full service, strategic communications firm helping clients reach and influence audiences in their backyard, across the country and in some…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 18 contacts → | ||||
Exact match “Primacy Strategy Group (PSG) is a Midwest based consulting firm operating at the intersection of government, business, and communications.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 18 contacts → | ||||
Exact match “George Arzt Communications, Inc.(GAC) is a full-service public, community and government relations firm with extensive experience and extraordinary contacts in media, politics…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 17 contacts → | ||||
Exact match “Patricia Lynch Associates Inc, or PLA, sets the "gold standard" in lobbying.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 16 contacts → | ||||
Exact match “Ervin Graves Strategy Group is a full-service consulting and government relations firm that works with a broad range of businesses across every sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 16 contacts → | ||||
Exact match “Smith, Costello & Crawford is a regulatory and legislative policy firm dedicated to helping our clients achieve success through consulting, lobbying, and law services.” Recorded in the RevenueBase company graph · Nov 6, 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 “constituent services 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 238 constituent services firms worldwide
See the full list, filter by size, metro and specialty, and access 954 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Constituent services firms worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for constituent services firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “constituent services 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. 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 954 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 November 6, 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.
Constituent services firms by location
2 lists · largest firstEvery Constituent services 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 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 “constituent services firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many constituent services firms are there worldwide?
RevenueBase identified 238 company matches for constituent services firms worldwide as of November 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?
Cornerstone Government Affairs tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most constituent services firms?
The United States leads with 188 companies. Every constituent services firms list by country and city is linked on this page.
Which city has the most constituent services firms?
Washington leads with 49 company records, followed by New York (7) and Sacramento (6).
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 954 professional contacts with verified work emails tracked across these 238 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 238 constituent services firms worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 constituent services firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 238 matching company records for constituent services firms worldwide, with 2,276 tracked contacts and 954 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 constituent services firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Cornerstone Government Affairscgagroup.comHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 276 contacts → |
“Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Plus Communicationspluspr.comHQ: Arlington, VA, United StatesReported employees: 201-500 | Arlington, VA, United States | 201-500 | Exact match | 196 contacts → |
“Strategy + Execution = Results.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  TFG The Ferguson Groupthefergusongroup.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 96 contacts → |
“Founded in 1982, The Ferguson Group has a proud record of success advocating on behalf of local communities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Bose Public Affairs Groupbosepublicaffairs.comHQ: Indianapolis, DC, United StatesReported employees: 11-50 | Indianapolis, DC, United States | 11-50 | Exact match | 68 contacts → |
“Bose Public Affairs Group successfully advocates for our clients’ legislative, regulatory, procurement, political and communication interests with offices in Indianapolis and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  State And Federal Communicationsstateandfed.comHQ: Akron, OH, United StatesReported employees: 11-50 | Akron, OH, United States | 11-50 | Exact match | 64 contacts → |
“State and Federal Communications, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Michael Best Strategiesmichaelbeststrategies.comHQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 59 contacts → |
“We are innovators and thought leaders who believe in developing robust integrated solutions for our clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Guerra Castellanos Y Asociadosgcya.netHQ: México, MexicoReported employees: 51-200 | México, Mexico | 51-200 | Exact match | 55 contacts → |
“Founded in January 2001 by Gabriel Guerra Castellanos, GC & A is a specialized consulting firm that offers strategic communication, lobbying, as well as government and community…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Crossroads Strategiescrshq.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 35 contacts → |
“Crossroads Strategies, LLC (CRS) is a bipartisan, multi-disciplinary federal relations, advocacy, and advisory firm based in Washington DC.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: Every State Capital, United StatesReported employees: 11-50 | Every State Capital, United States | 11-50 | Exact match | 33 contacts → |
“Duane Morris Government Strategies LLC (DMGS) offers a full range of government affairs services, including legislative, executive branch, and grassroots lobbying; rulemaking…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Vencer Public Affairs & Strategyvencerpas.comHQ: El Centro, United StatesReported employees: Not recorded | El Centro, United States | Not recorded | Exact match | 33 contacts → |
“Based in Southern California, VENCER Public Affairs & Strategy offers one thing: overcoming all odds and getting the job done.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  WSW Winning Strategies Washingtonwswdc.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 32 contacts → |
“WSW is an independent bipartisan federal government relations firm with a proven track record of success representing corporate, non-profit and public sector clients in the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  American Defense Internationalamericandefense.comHQ: Washington, United StatesReported employees: 11-50 | Washington, United States | 11-50 | Exact match | 31 contacts → |
“American Defense International, Inc.(ADI) serves a worldwide client base with a unique combination of technical expertise and the ability to work with Washington's most important…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  ACG Advocacyacgadvocacy.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 27 contacts → |
“ACG Advocacy is one of Washington's premier bipartisan government affairs and strategic consulting firms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  MBI INCmbi-gs.comHQ: Trenton, NJ, United StatesReported employees: 11-50 | Trenton, NJ, United States | 11-50 | Exact match | 27 contacts → |
“MBI, one of New Jersey’s largest public affairs firm, offers its clients more than 300 years of combined experience in state and local government relations and public relations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Washington, DC, United StatesReported employees: 1-10 | Washington, DC, United States | 1-10 | Exact match | 25 contacts → |
“Constituent Services Worldwide Public Benefit Corporation is a company based out of 201 Massachusetts Ave Suite B1, WASHINGTON, District of Columbia, United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Baker Group Strategiesbakergroupstrategies.comHQ: Nashville, TN, United StatesReported employees: 11-50 | Nashville, TN, United States | 11-50 | Exact match | 24 contacts → |
“Baker Group Strategies is a full-service firm with a record of winning campaigns under the most challenging circumstances.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Murphy Nasicamurphynasica.comHQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 21 contacts → |
“Originally founded in Texas, Murphy Nasica & Associates (MNA) is a political consulting firm that represents clients at every level of government: municipal, state and federal.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Gotham Government Relationsgothamgr.comHQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 20 contacts → |
“Harnessing the power of Advocacy, Law, Politics & the Press.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Trenton, NJ, United StatesReported employees: 11-50 | Trenton, NJ, United States | 11-50 | Exact match | 19 contacts → |
“Princeton Public Affairs Group (PPAG) is the largest state lobbying firm in the country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Montagne Powersmontagnepowers.comHQ: Manchester, NH, United StatesReported employees: 11-50 | Manchester, NH, United States | 11-50 | Exact match | 19 contacts → |
“Montagne Powers is the region's leading full service, strategic communications firm helping clients reach and influence audiences in their backyard, across the country and in some…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Primacy Strategy Groupprimacysg.comHQ: St. Paul, ND, United StatesReported employees: 11-50 | St. Paul, ND, United States | 11-50 | Exact match | 18 contacts → |
“Primacy Strategy Group (PSG) is a Midwest based consulting firm operating at the intersection of government, business, and communications.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  George Arzt Communications, INCgacnyc.comHQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 18 contacts → |
“George Arzt Communications, Inc.(GAC) is a full-service public, community and government relations firm with extensive experience and extraordinary contacts in media, politics…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Patricia Lynch Associates INCplynchassociates.comHQ: Albany, NY, United StatesReported employees: 11-50 | Albany, NY, United States | 11-50 | Exact match | 17 contacts → |
“Patricia Lynch Associates Inc, or PLA, sets the "gold standard" in lobbying.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Ervin Graves Strategy Groupervingraves.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 16 contacts → |
“Ervin Graves Strategy Group is a full-service consulting and government relations firm that works with a broad range of businesses across every sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Smith, Costello & Crawfordpublicpolicylaw.comHQ: Boston, MA, United StatesReported employees: 1-10 | Boston, MA, United States | 1-10 | Exact match | 16 contacts → |
“Smith, Costello & Crawford is a regulatory and legislative policy firm dedicated to helping our clients achieve success through consulting, lobbying, and law services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 238 company matches
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Constituent services firms: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
235 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 238 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Constituent services firms by location
2 lists · largest firstEvery Constituent services firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Cities
Questions about this company list
What does Exact match mean for constituent services firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many constituent services firms did RevenueBase find worldwide?
The saved snapshot records 238 matching company records, 2,276 tracked contacts and 954 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 constituent services firms worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/constituent-services-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 constituent services firms worldwide
RevenueBase records 238 matching company records for constituent services firms worldwide, with 2,276 tracked contacts and 954 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 constituent services firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Cornerstone Government Affairscgagroup.com HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 276 contacts → |
“Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Plus Communicationspluspr.com HQ: Arlington, VA, United StatesReported employees: 201-500 | Arlington, VA, United States | 201-500 | Exact match | 196 contacts → |
“Strategy + Execution = Results.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | TFG The Ferguson Groupthefergusongroup.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 96 contacts → |
“Founded in 1982, The Ferguson Group has a proud record of success advocating on behalf of local communities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Bose Public Affairs Groupbosepublicaffairs.com HQ: Indianapolis, DC, United StatesReported employees: 11-50 | Indianapolis, DC, United States | 11-50 | Exact match | 68 contacts → |
“Bose Public Affairs Group successfully advocates for our clients’ legislative, regulatory, procurement, political and communication interests with offices in Indianapolis and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | State And Federal Communicationsstateandfed.com HQ: Akron, OH, United StatesReported employees: 11-50 | Akron, OH, United States | 11-50 | Exact match | 64 contacts → |
“State and Federal Communications, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Michael Best Strategiesmichaelbeststrategies.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 59 contacts → |
“We are innovators and thought leaders who believe in developing robust integrated solutions for our clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Guerra Castellanos Y Asociadosgcya.net HQ: México, MexicoReported employees: 51-200 | México, Mexico | 51-200 | Exact match | 55 contacts → |
“Founded in January 2001 by Gabriel Guerra Castellanos, GC & A is a specialized consulting firm that offers strategic communication, lobbying, as well as government and community…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Crossroads Strategiescrshq.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 35 contacts → |
“Crossroads Strategies, LLC (CRS) is a bipartisan, multi-disciplinary federal relations, advocacy, and advisory firm based in Washington DC.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: Every State Capital, United StatesReported employees: 11-50 | Every State Capital, United States | 11-50 | Exact match | 33 contacts → |
“Duane Morris Government Strategies LLC (DMGS) offers a full range of government affairs services, including legislative, executive branch, and grassroots lobbying; rulemaking…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Vencer Public Affairs & Strategyvencerpas.com HQ: El Centro, United StatesReported employees: Not recorded | El Centro, United States | Not recorded | Exact match | 33 contacts → |
“Based in Southern California, VENCER Public Affairs & Strategy offers one thing: overcoming all odds and getting the job done.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | WSW Winning Strategies Washingtonwswdc.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 32 contacts → |
“WSW is an independent bipartisan federal government relations firm with a proven track record of success representing corporate, non-profit and public sector clients in the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | American Defense Internationalamericandefense.com HQ: Washington, United StatesReported employees: 11-50 | Washington, United States | 11-50 | Exact match | 31 contacts → |
“American Defense International, Inc.(ADI) serves a worldwide client base with a unique combination of technical expertise and the ability to work with Washington's most important…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ACG Advocacyacgadvocacy.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 27 contacts → |
“ACG Advocacy is one of Washington's premier bipartisan government affairs and strategic consulting firms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | MBI INCmbi-gs.com HQ: Trenton, NJ, United StatesReported employees: 11-50 | Trenton, NJ, United States | 11-50 | Exact match | 27 contacts → |
“MBI, one of New Jersey’s largest public affairs firm, offers its clients more than 300 years of combined experience in state and local government relations and public relations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Washington, DC, United StatesReported employees: 1-10 | Washington, DC, United States | 1-10 | Exact match | 25 contacts → |
“Constituent Services Worldwide Public Benefit Corporation is a company based out of 201 Massachusetts Ave Suite B1, WASHINGTON, District of Columbia, United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Baker Group Strategiesbakergroupstrategies.com HQ: Nashville, TN, United StatesReported employees: 11-50 | Nashville, TN, United States | 11-50 | Exact match | 24 contacts → |
“Baker Group Strategies is a full-service firm with a record of winning campaigns under the most challenging circumstances.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Murphy Nasicamurphynasica.com HQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 21 contacts → |
“Originally founded in Texas, Murphy Nasica & Associates (MNA) is a political consulting firm that represents clients at every level of government: municipal, state and federal.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Gotham Government Relationsgothamgr.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 20 contacts → |
“Harnessing the power of Advocacy, Law, Politics & the Press.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Trenton, NJ, United StatesReported employees: 11-50 | Trenton, NJ, United States | 11-50 | Exact match | 19 contacts → |
“Princeton Public Affairs Group (PPAG) is the largest state lobbying firm in the country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Montagne Powersmontagnepowers.com HQ: Manchester, NH, United StatesReported employees: 11-50 | Manchester, NH, United States | 11-50 | Exact match | 19 contacts → |
“Montagne Powers is the region's leading full service, strategic communications firm helping clients reach and influence audiences in their backyard, across the country and in some…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Primacy Strategy Groupprimacysg.com HQ: St. Paul, ND, United StatesReported employees: 11-50 | St. Paul, ND, United States | 11-50 | Exact match | 18 contacts → |
“Primacy Strategy Group (PSG) is a Midwest based consulting firm operating at the intersection of government, business, and communications.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | George Arzt Communications, INCgacnyc.com HQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 18 contacts → |
“George Arzt Communications, Inc.(GAC) is a full-service public, community and government relations firm with extensive experience and extraordinary contacts in media, politics…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Patricia Lynch Associates INCplynchassociates.com HQ: Albany, NY, United StatesReported employees: 11-50 | Albany, NY, United States | 11-50 | Exact match | 17 contacts → |
“Patricia Lynch Associates Inc, or PLA, sets the "gold standard" in lobbying.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Ervin Graves Strategy Groupervingraves.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 16 contacts → |
“Ervin Graves Strategy Group is a full-service consulting and government relations firm that works with a broad range of businesses across every sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Smith, Costello & Crawfordpublicpolicylaw.com HQ: Boston, MA, United StatesReported employees: 1-10 | Boston, MA, United States | 1-10 | Exact match | 16 contacts → |
“Smith, Costello & Crawford is a regulatory and legislative policy firm dedicated to helping our clients achieve success through consulting, lobbying, and law services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 238 company matches
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Constituent services firms: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
235 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 238 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Constituent services firms by location
2 lists · largest firstEvery Constituent services firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Cities
Questions about this company list
What does Exact match mean for constituent services firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many constituent services firms did RevenueBase find worldwide?
The saved snapshot records 238 matching company records, 2,276 tracked contacts and 954 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 constituent services firms worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/constituent-services-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗