Company lists · Data refreshed September 2026
Top 25 Grassroots campaign organizations worldwide
RevenueBase identified 286 grassroots campaign organizations worldwide as of September 2026 and tracks 4,062 professional contacts across them, including 1,098 with verified work emails. The United States is the largest market and Washington the largest hub.
This list covers grassroots campaign organizations worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026. Country and city lists for grassroots campaign organizations follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest grassroots campaign organizations worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 336 contacts → | ||||
Strong evidence “FieldWorks brings innovative grassroots and field strategies to Democratic and progressive campaigns and organizations.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 309 contacts → | ||||
Strong evidence “Grassroots Campaigns, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 239 contacts → | ||||
Indirect evidence “We’re bold.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 217 contacts → | ||||
Partial evidence “Common Cause is a nonpartisan, grassroots organization dedicated to restoring the core values of American democracy, reinventing an open, honest and accountable government that…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 173 contacts → | ||||
Indirect evidence “We are the UK’s biggest, most diverse, and most effective people-powered alliance.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 144 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 127 contacts → | ||||
Indirect evidence “We travel across the nation to register voters, knock doors, and win elections!” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 123 contacts → | ||||
Indirect evidence “Our mission is to resist Trump’s agenda by empowering local activist groups to make their Members of Congress listen.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 116 contacts → | ||||
Indirect evidence “MoveOn is the largest independent, progressive, digitally-connected organizing group in the United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 62 contacts → | ||||
Partial evidence “Citizen Action of New York is a grassroots membership organization taking on big issues that are at the center of transforming American society.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 60 contacts → | ||||
Indirect evidence “FreedomWorks exists to build, educate, and mobilize the largest network of activists advocating the principles of smaller government, lower taxes, free markets, personal liberty…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 59 contacts → | ||||
Indirect evidence “Civic Nation is a home for changemakers who inspire, educate, and activate people around the issues that will define this generation.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 56 contacts → | ||||
Partial evidence “Swing Left is a national grassroots organization working to elect Democrats up and down the ballot.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 54 contacts → | ||||
Partial evidence “Our work began in Utah after the 2016 campaign cycle, and we have since expanded to operate in eight states and counting.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 51 contacts → | ||||
Indirect evidence “38 Degrees is made up of more than 2 million people from all walks of life across the UK.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 49 contacts → | ||||
Strong evidence “Street Level Strategy, LLC is a public affairs firm that specializes in grassroots mobilization, community organizing, digital organizing, and campaign management for a range of…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 46 contacts → | ||||
Partial evidence “9to5 is a grassroots multiracial member-led organization working to advance economic justice through issue-based advocacy, grassroots organizing, and community education by…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 46 contacts → | ||||
Strong evidence “Revolution Field Strategies is a full-service strategic planning, organizing, and grassroots mobilization firm that leads successful campaigns and programs throughout the country.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 44 contacts → | ||||
Partial evidence “Project 26 PA (P26) is a youth-led 501(c)(3) and 501(c)4) grassroots organization.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 35 contacts → | ||||
Strong evidence “RepresentUs is the nation’s largest grassroots anti-corruption campaign.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 35 contacts → | ||||
Indirect evidence “Somos uma nova organização dedicada a construir e apoiar iniciativas que engajem pessoas em torno de causas sociais e políticas, por meio de atividades de comunicação e…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 32 contacts → | ||||
Partial evidence “State Voices is a national network – built from the states up – that helps grassroots organizations win civic engagement victories and build long-term political power.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 30 contacts → | ||||
Partial evidence “Vanguard offers your campaign a quickly assembled and effectively implemented ground game that cuts through the clutter of political noise and advertising to deliver your message…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 25 contacts → | ||||
Indirect evidence “Many people are frustrated that more is not being done to improve the quality of their lives and communities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 25 contacts → | ||||
Partial evidence “Grassroots Team is the leading community mobilization organization building long-term support for exceptional progressive organizations.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: grassroots campaign organizations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names grassroots campaign organizations.
- Partial evidence
- Its own public description names part of grassroots campaign organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name grassroots campaign organizations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 286 grassroots campaign organizations worldwide
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Grassroots campaign organizations worldwide at a glance
As of Sep 19, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among grassroots campaign organizations, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for grassroots campaign organizations are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “grassroots campaign organizations”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names grassroots campaign organizations), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among grassroots campaign organizations, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,098 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Grassroots campaign organizations by location
1 lists · largest firstEvery Grassroots campaign organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names grassroots campaign organizations, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many grassroots campaign organizations are there worldwide?
RevenueBase identified 286 grassroots campaign organizations worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Fieldworks, headquartered in Washington, tops this list with the largest team on record.
Which country has the most grassroots campaign organizations?
The United States leads with 161 companies. Every grassroots campaign organizations list by country and city is linked on this page.
Which city has the most grassroots campaign organizations?
Washington leads with 19 headquartered companies, followed by Boston (7) and Chicago (6).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,098 verified decision-maker contacts tracked across these 286 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.