Company lists · Data refreshed September 2026
Top 25 Grassroots advocacy firms worldwide
RevenueBase identified 2,884 company matches for grassroots advocacy firms worldwide as of September 2026 and tracks 24,611 professional contacts across them, including 9,980 with verified work emails. The United States is the largest market and Washington the largest hub.
This list covers company matches for grassroots advocacy 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 September 20, 2026. Country and city lists for grassroots advocacy 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 grassroots advocacy firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 411 contacts → | ||||
Exact match “DDC Public Affairs builds communities of advocates that impact policy and win campaigns.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 398 contacts → | ||||
Exact match “The Outreach Team is a national consulting firm working to make the world a better place.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 390 contacts → | ||||
Exact match “Mercury is a national bipartisan government relations and strategic communications firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 357 contacts → | ||||
Exact match “Quorum is your AI-powered public affairs software to get information and execute strategy all in one place.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 336 contacts → | ||||
Exact match “FieldWorks brings innovative grassroots and field strategies to Democratic and progressive campaigns and organizations.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 309 contacts → | ||||
Exact match “Grassroots Campaigns, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 255 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 20, 2026 · View company records in RevenueBase | |||||
| 8 | 243 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 20, 2026 · View company records in RevenueBase | |||||
| 9 | 239 contacts → | ||||
Exact match “We’re bold.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 236 contacts → | ||||
Exact match “Cohen Milstein Sellers & Toll LLP champions the causes of real people-workers, consumers, small business owners, investors, and whistleblowers-working to deliver corporate reforms…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 226 contacts → | ||||
Exact match “At MissionWired, we believe your world-changing cause deserves more than marginal gains.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 205 contacts → | ||||
Exact match “Excellence isn’t enough.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 198 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 20, 2026 · View company records in RevenueBase | |||||
| 14 | 195 contacts → | ||||
Exact match “Public Citizen is a nonprofit consumer advocacy organization that champions the public interest – your interests – in the halls of power.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 188 contacts → | ||||
Exact match “Strategy + Execution = Results.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 187 contacts → | ||||
Exact match “Since its inception, Lilly & Company has built a unique and comprehensive strategy for providing the best possible services available in political fundraising and grassroots…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 179 contacts → | ||||
Exact match “Global Strategy Group is the go-to public affairs, communications, and research partner for companies, causes, and campaigns.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 170 contacts → | ||||
Exact match “We believe there’s no force more powerful than people taking collective action on the things they care about.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 166 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 20, 2026 · View company records in RevenueBase | |||||
| 20 | 145 contacts → | ||||
Exact match “At Sanford Heisler Sharp McKnight, our team of knowledgeable attorneys is committed to representing clients in their claims against powerful entities.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 144 contacts → | ||||
Exact match “For Our Future is a 501(c)(3), 501(c)(4), and PAC that empowers people in battleground states and districts to organize their communities, build progressive power, and fight for a…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 143 contacts → | ||||
Exact match “We're a strategy consultancy, a creative agency and a social movement incubator.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 140 contacts → | ||||
Exact match “At Fenton, we are communications strategists for social change.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 133 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 127 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 20, 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 “grassroots advocacy 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 2,884 grassroots advocacy firms worldwide
See the full list, filter by size, metro and specialty, and access 9,980 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Grassroots advocacy firms worldwide at a glance
As of Sep 20, 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 grassroots advocacy firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “grassroots advocacy 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 9,980 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 20, 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.
Grassroots advocacy firms by location
19 lists · largest firstEvery Grassroots advocacy firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Grassroots advocacy firms based in the United States2,026
- Grassroots advocacy firms based in Canada42
- Grassroots advocacy firms based in Australia36
- Grassroots advocacy firms based in Brazil30
Cities
- Grassroots advocacy firms based in Washington, United States416
- Grassroots advocacy firms based in Sacramento, United States73
- Grassroots advocacy firms based in New York, United States64
- Grassroots advocacy firms based in Austin, United States55
- Grassroots advocacy firms based in Chicago, United States44
- Grassroots advocacy firms based in Los Angeles, United States43
- Grassroots advocacy firms based in Denver, United States36
- Grassroots advocacy firms based in Boston, United States34
- Grassroots advocacy firms based in Phoenix, United States31
- Grassroots advocacy firms based in Atlanta, United States30
- Grassroots advocacy firms based in Arlington, United States28
- Grassroots advocacy firms based in Tallahassee, United States27
- Grassroots advocacy firms based in Alexandria, United States25
- Grassroots advocacy firms based in Columbus, United States25
- Grassroots advocacy firms based in Lansing, United States25
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 “grassroots advocacy firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many grassroots advocacy firms are there worldwide?
RevenueBase identified 2,884 company matches for grassroots advocacy firms worldwide 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?
DDC Public Affairs tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most grassroots advocacy firms?
The United States leads with 2,026 companies, followed by Canada (42) and Australia (36). Every grassroots advocacy firms list by country and city is linked on this page.
Which city has the most grassroots advocacy firms?
Washington leads with 416 company records, followed by Sacramento (73) and New York (64).
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 9,980 professional contacts with verified work emails tracked across these 2,884 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 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,884 grassroots advocacy 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 grassroots advocacy 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 2,884 matching company records for grassroots advocacy firms worldwide, with 24,611 tracked contacts and 9,980 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: September 20, 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 grassroots advocacy 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 |  DDC Public Affairsddcpublicaffairs.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 411 contacts → |
“DDC Public Affairs builds communities of advocates that impact policy and win campaigns.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  The Outreach Teamtheoutreachteam.netHQ: Ithaca, NY, United StatesReported employees: 201-500 | Ithaca, NY, United States | 201-500 | Exact match | 398 contacts → |
“The Outreach Team is a national consulting firm working to make the world a better place.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Mercury Public Affairs, LLCmercuryllc.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 390 contacts → |
“Mercury is a national bipartisan government relations and strategic communications firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Quorumquorum.usHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 357 contacts → |
“Quorum is your AI-powered public affairs software to get information and execute strategy all in one place.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Fieldworksfieldworks.comHQ: Washington, DC, United StatesReported employees: 5,001-10,000 | Washington, DC, United States | 5,001-10,000 | Exact match | 336 contacts → |
“FieldWorks brings innovative grassroots and field strategies to Democratic and progressive campaigns and organizations.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Grassroots Campaignsgrassrootscampaigns.com HQ: United StatesReported employees: 501-1,000 | United States | 501-1,000 | Exact match | 309 contacts → |
“Grassroots Campaigns, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Cornerstone Government Affairscgagroup.comHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 255 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  BGR Groupbgrdc.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 243 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  GMMBgmmb.comHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 239 contacts → |
“We’re bold.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Cohen Milstein Sellers & Toll LLPcohenmilstein.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 236 contacts → |
“Cohen Milstein Sellers & Toll LLP champions the causes of real people-workers, consumers, small business owners, investors, and whistleblowers-working to deliver corporate reforms…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Missionwiredmissionwired.comHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 226 contacts → |
“At MissionWired, we believe your world-changing cause deserves more than marginal gains.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  AVŌQteamavoq.comHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 205 contacts → |
“Excellence isn’t enough.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  DCIdcigroup.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 198 contacts → |
“DCI Group is an independent public affairs consulting firm that specializes in public relations, crisis management, grassroots engagement, and digital advocacy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Public Citizencitizen.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 195 contacts → |
“Public Citizen is a nonprofit consumer advocacy organization that champions the public interest – your interests – in the halls of power.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Plus Communicationspluspr.comHQ: Arlington, VA, United StatesReported employees: 201-500 | Arlington, VA, United States | 201-500 | Exact match | 188 contacts → |
“Strategy + Execution = Results.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Lilly & Companylillyandcompany.comHQ: Austin, TX, United StatesReported employees: Not recorded | Austin, TX, United States | Not recorded | Exact match | 187 contacts → |
“Since its inception, Lilly & Company has built a unique and comprehensive strategy for providing the best possible services available in political fundraising and grassroots…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Global Strategy Groupglobalstrategygroup.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 179 contacts → |
“Global Strategy Group is the go-to public affairs, communications, and research partner for companies, causes, and campaigns.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Blue Statebluestate.coHQ: Brooklyn, United StatesReported employees: 201-500 | Brooklyn, United States | 201-500 | Exact match | 170 contacts → |
“We believe there’s no force more powerful than people taking collective action on the things they care about.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Invariantinvariantgr.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 166 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Sanford Heisler Sharp Mcknight, LLPsanfordheisler.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 145 contacts → |
“At Sanford Heisler Sharp McKnight, our team of knowledgeable attorneys is committed to representing clients in their claims against powerful entities.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | For OUR Futureforourfuturefund.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 144 contacts → |
“For Our Future is a 501(c)(3), 501(c)(4), and PAC that empowers people in battleground states and districts to organize their communities, build progressive power, and fight for a…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Purposepurpose.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 143 contacts → |
“We're a strategy consultancy, a creative agency and a social movement incubator.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Fentonfenton.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 140 contacts → |
“At Fenton, we are communications strategists for social change.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  ARGUSthinkargus.comHQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 133 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 |  Mcguirewoods Consultingmwcllc.comHQ: Richmond, VA, United StatesReported employees: 51-200 | Richmond, VA, United States | 51-200 | Exact match | 127 contacts → |
“What people say and do in government can have a profound impact on your organization.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,884 company matches
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Grassroots advocacy firms: dataset insights
September 20, 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
2,880 records in the displayed employee bands.
4 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 2,884 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: September 20, 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 ↗
Grassroots advocacy firms by location
19 lists · largest firstEvery Grassroots advocacy firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Grassroots advocacy firms based in the United States2,026
- Grassroots advocacy firms based in Canada42
- Grassroots advocacy firms based in Australia36
- Grassroots advocacy firms based in Brazil30
Cities
- Grassroots advocacy firms based in Washington, United States416
- Grassroots advocacy firms based in Sacramento, United States73
- Grassroots advocacy firms based in New York, United States64
- Grassroots advocacy firms based in Austin, United States55
- Grassroots advocacy firms based in Chicago, United States44
- Grassroots advocacy firms based in Los Angeles, United States43
- Grassroots advocacy firms based in Denver, United States36
- Grassroots advocacy firms based in Boston, United States34
- Grassroots advocacy firms based in Phoenix, United States31
- Grassroots advocacy firms based in Atlanta, United States30
- Grassroots advocacy firms based in Arlington, United States28
- Grassroots advocacy firms based in Tallahassee, United States27
- Grassroots advocacy firms based in Alexandria, United States25
- Grassroots advocacy firms based in Columbus, United States25
- Grassroots advocacy firms based in Lansing, United States25
Questions about this company list
What does Exact match mean for grassroots advocacy 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 grassroots advocacy firms did RevenueBase find worldwide?
The saved snapshot records 2,884 matching company records, 24,611 tracked contacts and 9,980 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: September 20, 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 grassroots advocacy firms worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/grassroots-advocacy-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 grassroots advocacy firms worldwide
RevenueBase records 2,884 matching company records for grassroots advocacy firms worldwide, with 24,611 tracked contacts and 9,980 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: September 20, 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 grassroots advocacy 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 | DDC Public Affairsddcpublicaffairs.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 411 contacts → |
“DDC Public Affairs builds communities of advocates that impact policy and win campaigns.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | The Outreach Teamtheoutreachteam.net HQ: Ithaca, NY, United StatesReported employees: 201-500 | Ithaca, NY, United States | 201-500 | Exact match | 398 contacts → |
“The Outreach Team is a national consulting firm working to make the world a better place.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Mercury Public Affairs, LLCmercuryllc.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 390 contacts → |
“Mercury is a national bipartisan government relations and strategic communications firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Quorumquorum.us HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 357 contacts → |
“Quorum is your AI-powered public affairs software to get information and execute strategy all in one place.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Fieldworksfieldworks.com HQ: Washington, DC, United StatesReported employees: 5,001-10,000 | Washington, DC, United States | 5,001-10,000 | Exact match | 336 contacts → |
“FieldWorks brings innovative grassroots and field strategies to Democratic and progressive campaigns and organizations.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Grassroots Campaignsgrassrootscampaigns.com HQ: United StatesReported employees: 501-1,000 | United States | 501-1,000 | Exact match | 309 contacts → |
“Grassroots Campaigns, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Cornerstone Government Affairscgagroup.com HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 255 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | BGR Groupbgrdc.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 243 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | GMMBgmmb.com HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 239 contacts → |
“We’re bold.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Cohen Milstein Sellers & Toll LLPcohenmilstein.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 236 contacts → |
“Cohen Milstein Sellers & Toll LLP champions the causes of real people-workers, consumers, small business owners, investors, and whistleblowers-working to deliver corporate reforms…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Missionwiredmissionwired.com HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 226 contacts → |
“At MissionWired, we believe your world-changing cause deserves more than marginal gains.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | AVŌQteamavoq.com HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 205 contacts → |
“Excellence isn’t enough.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | DCIdcigroup.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 198 contacts → |
“DCI Group is an independent public affairs consulting firm that specializes in public relations, crisis management, grassroots engagement, and digital advocacy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Public Citizencitizen.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 195 contacts → |
“Public Citizen is a nonprofit consumer advocacy organization that champions the public interest – your interests – in the halls of power.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Plus Communicationspluspr.com HQ: Arlington, VA, United StatesReported employees: 201-500 | Arlington, VA, United States | 201-500 | Exact match | 188 contacts → |
“Strategy + Execution = Results.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Lilly & Companylillyandcompany.com HQ: Austin, TX, United StatesReported employees: Not recorded | Austin, TX, United States | Not recorded | Exact match | 187 contacts → |
“Since its inception, Lilly & Company has built a unique and comprehensive strategy for providing the best possible services available in political fundraising and grassroots…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Global Strategy Groupglobalstrategygroup.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 179 contacts → |
“Global Strategy Group is the go-to public affairs, communications, and research partner for companies, causes, and campaigns.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Blue Statebluestate.co HQ: Brooklyn, United StatesReported employees: 201-500 | Brooklyn, United States | 201-500 | Exact match | 170 contacts → |
“We believe there’s no force more powerful than people taking collective action on the things they care about.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Invariantinvariantgr.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 166 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Sanford Heisler Sharp Mcknight, LLPsanfordheisler.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 145 contacts → |
“At Sanford Heisler Sharp McKnight, our team of knowledgeable attorneys is committed to representing clients in their claims against powerful entities.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | For OUR Futureforourfuturefund.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 144 contacts → |
“For Our Future is a 501(c)(3), 501(c)(4), and PAC that empowers people in battleground states and districts to organize their communities, build progressive power, and fight for a…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Purposepurpose.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 143 contacts → |
“We're a strategy consultancy, a creative agency and a social movement incubator.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Fentonfenton.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 140 contacts → |
“At Fenton, we are communications strategists for social change.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | ARGUSthinkargus.com HQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 133 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 | Mcguirewoods Consultingmwcllc.com HQ: Richmond, VA, United StatesReported employees: 51-200 | Richmond, VA, United States | 51-200 | Exact match | 127 contacts → |
“What people say and do in government can have a profound impact on your organization.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,884 company matches
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Grassroots advocacy firms: dataset insights
September 20, 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
2,880 records in the displayed employee bands.
4 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 2,884 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: September 20, 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 ↗
Grassroots advocacy firms by location
19 lists · largest firstEvery Grassroots advocacy firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Grassroots advocacy firms based in the United States2,026
- Grassroots advocacy firms based in Canada42
- Grassroots advocacy firms based in Australia36
- Grassroots advocacy firms based in Brazil30
Cities
- Grassroots advocacy firms based in Washington, United States416
- Grassroots advocacy firms based in Sacramento, United States73
- Grassroots advocacy firms based in New York, United States64
- Grassroots advocacy firms based in Austin, United States55
- Grassroots advocacy firms based in Chicago, United States44
- Grassroots advocacy firms based in Los Angeles, United States43
- Grassroots advocacy firms based in Denver, United States36
- Grassroots advocacy firms based in Boston, United States34
- Grassroots advocacy firms based in Phoenix, United States31
- Grassroots advocacy firms based in Atlanta, United States30
- Grassroots advocacy firms based in Arlington, United States28
- Grassroots advocacy firms based in Tallahassee, United States27
- Grassroots advocacy firms based in Alexandria, United States25
- Grassroots advocacy firms based in Columbus, United States25
- Grassroots advocacy firms based in Lansing, United States25
Questions about this company list
What does Exact match mean for grassroots advocacy 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 grassroots advocacy firms did RevenueBase find worldwide?
The saved snapshot records 2,884 matching company records, 24,611 tracked contacts and 9,980 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: September 20, 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 grassroots advocacy firms worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/grassroots-advocacy-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗