| BECKET FUND | $17,543,941 | V24 | published | science: christian science | Washington, DC | 2024 |
| FRASER INSTITUTE | $10,481,818 | V24 | inferred 0.50 | | Canada | 2025 |
| AMERICAN POLITICAL SCIENCE ASSOCIATION | $9,087,562 | V24 | published | science: research education | Washington, DC | 2024 |
| THE NATIONAL ASSOCIATION OF STATE ENERGY OFFICIALS | $8,222,494 | V24 | inferred 0.50 | | Arlington, VA | 2024 |
| INDEPENDENT INSTITUTE | $6,514,941 | V24 | inferred 0.50 | | Oakland, CA | 2024 |
| DEMOCRATIC SOCIALISTS OF AMERICA INC | $6,386,022 | V24 | published | | New York, NY | 2024 |
| JOHN LOCKE FOUNDATION INC | $5,424,918 | V24 | inferred 0.50 | | Raleigh, NC | 2024 |
| POLITICAL RESEARCH ASSOCIATES | $4,692,441 | V24 | published | | Somerville, MA | 2023 |
| JOINT CENTER FOR POLITICAL AND ECONOMIC STUDIES INC | $3,445,579 | V24 | published | | Washington, DC | 2024 |
| AMERICAN PSYCHOANALYTIC ASSOCIATION | $3,234,080 | V24 | inferred 0.50 | science: research education | New York, NY | 2024 |
| SCHOLARS STRATEGY NETWORK | $3,197,242 | V24 | published | | Boston, MA | 2025 |
| AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE | $2,448,523 | V24 | published | science: research education | Philadelphia, PA | 2025 |
| NATIONAL INSTITUTE FOR PUBLIC POLICY INC | $2,207,781 | V24 | inferred 0.70 | | Fairfax, VA | 2024 |
| CENTER FOR INDEPENDENT THOUGHT INC | $2,198,059 | V24 | published | | Bala Cynwyd, PA | 2025 |
| CITIZENS AGAINST GOVERNMENT WASTE | $1,558,891 | V24 | inferred 0.50 | | Washington, DC | 2025 |
| SAN FRANCISCO CONSUMER ACTION | $1,269,490 | V24 | inferred 0.50 | women: issues | San Francisco, CA | 2024 |
| SOUTHERN POLITICAL SCIENCE ASSOCIATION INC | $1,075,581 | V24 | published | science: research education | Griffin, GA | 2024 |
| WASHINGTON MONTHLY INSTITUTE INC | $957,398 | V24 | published | violence: gun | Washington, DC | 2025 |
| SOCIAL PHILOSOPHY AND POLICY FOUNDATION | $794,296 | V24 | inferred 0.50 | science: research education | Bowling Green, OH | 2024 |
| INTERNATIONAL SOCIETY OF POLITICAL PSYCHOLOGY INC | $667,274 | V24 | published | | Newark, DE | 2024 |
| COLORADO LATINO LEADERSHIP AND RESEARCH ORGANIZAION INC | $649,718 | V24 | inferred 0.50 | | Denver, CO | 2025 |
| COMMUNITY ACTION NETWORK FKA LINCOLN CLUB NETWORK | $612,099 | V24 | inferred 0.40 | | Irvine, CA | 2024 |
| CENTER FOR ADVANCED CHINA RESEARCH | $594,990 | V24 | inferred 0.75 | | Washington, DC | 2023 |
| CONSERVATIVE LEADERS FOR EDUCATION | $448,000 | V24 | inferred 0.50 | | Alexandria, VA | 2019 |
| DEMOCRATIC SOCIALISTS OF AMERICA FUND INC | $399,886 | V24 | published | | New York, NY | 2024 |
| INSTITUTE FOR RESEARCH MIDDLE EASTERN POLICY INC | $394,778 | V24 | published | | Washington, DC | 2025 |
| UNION OF UNEMPLOYED INC | $340,688 | V24 | inferred 0.50 | | Bethesda, MD | 2014 |
| INSTITUTE FOR POLITICAL ECONOMY | $339,525 | V24 | published | | Crawfordville, FL | 2025 |
| THE INTERNATIONAL ASSOCIATION FOR PSYCHOANALYTIC SELF PSYCHOLOGY FUN | $320,873 | V24 | inferred 0.40 | | Houston, TX | 2025 |
| Corporation for Advancement of | $293,077 | V24 | inferred 0.70 | | Princeton, NJ | 2011 |
| VOICES FOR AMERICA'S TROOPS | $286,633 | V24 | inferred 0.55 | | Alexandria, VA | 2019 |
| ENERGY POLICY RESEARCH FOUNDATION INC | $268,000 | V24 | inferred 0.60 | | Washington, DC | 2022 |
| THE CLAUDE PEPPER FOUNDATION INC | $259,694 | V24 | inferred 0.50 | | Tallahassee, FL | 2024 |
| COMMON SENSE INSTITUTE OF NEW JERSEYINC | $199,956 | V24 | inferred 0.55 | | Randolph, NJ | 2013 |
| NEW JERSEY CENTER FOR CIVIC & LAW RELATED EDUCATION INC | $190,996 | V24 | published | | Piscataway, NJ | 2025 |
| THE MONT PELERIN SOCIETY | $179,125 | V24 | inferred 0.60 | | Alexandria, VA | 2013 |
| NATIONAL STRATEGY INFORMATION CENTER INC | $175,569 | V24 | inferred 0.50 | | Bethesda, MD | 2014 |
| NCOBPS INC | $171,169 | V24 | published | science: research education | Itta Bena, MS | 2025 |
| BARBARA LEE FAMILY FOUNDATION INC | $170,827 | V24 | inferred 0.55 | women: issues | Cambridge, MA | 2023 |
| PROGRESS IOWA | $161,514 | V24 | inferred 0.50 | | Des Moines, IA | 2019 |
| THE HISTORICAL SOCIETY OF THE DISTRICT OF COLUMBIA CIRCUIT | $158,094 | V24 | published | | Washington, DC | 2024 |
| CONNECTICUT PSYCHOLOGICAL | $152,791 | V24 | inferred 0.50 | science: research education | Old Saybrook, CT | 2024 |
| THE INSTITUTE OF POLITICAL LEADERSHIP INC | $137,541 | V24 | published | women: issues | Raleigh, NC | 2025 |
| GALEN INSTITUTE INC | $114,244 | V24 | inferred 0.50 | | Paeonian Springs, VA | 2022 |
| TAMPA BAY AREA COMMITTEE ON FOREIGN RELATIONS INC | $104,349 | V24 | published | | Tampa, FL | 2025 |
| CENTER ON GLOBAL INTERESTS | $102,548 | V24 | inferred 0.80 | | Washington, DC | 2016 |
| WEST COAST ANTI-MONEY LAUNDERING FORUM | $101,209 | V24 | inferred 0.60 | | San Francisco, CA | 2024 |
| BETTER EDUCATION FOR KIDS INC | $100,158 | V24 | inferred 0.60 | | Cranford, NJ | 2020 |
| AMERICAN POLICY PROJECT INC | $80,495 | V24 | published | | Lincoln, NE | 2025 |
| CENTER FOR TEACHING THE RULE OF LAW INC | $55,008 | V24 | published | | Frederick, MD | 2013 |
| ROBERT A TAFT INSTITUTE OF GOVERNMENT | $51,891 | V24 | published | | Flushing, NY | 2024 |
| Regional Air Alliance of West Michigan | $50,015 | V24 | inferred 0.40 | | Grand Rapids, MI | 2013 |
| POPULATION RESOURCE CENTER INC | $33,096 | V24 | inferred 0.55 | | Princeton, NJ | 2011 |
| INFORMACION COMUN INC | $26,374 | V24 | inferred 0.55 | | Fresno, CA | 2020 |
| OKLAHOMA WORKFORCE AND CITIZENS OF | $25,363 | V24 | inferred 0.55 | | Oklahoma City, OK | 2018 |
| PENNSYLVANIA ASSOCIATION FOR MARRIAGE & FAMILY THERAPY | $24,731 | V24 | inferred 0.50 | | Wyndmoor, PA | 2018 |
| BORDER911 FOUNDATION INC | $19,330 | V24 | published | | Fredericksburg, VA | 2025 |
| STOP PREDATORY GAMBLING KENTUCKY | $15,320 | V24 | inferred 0.55 | | Lexington, KY | 2013 |
| TATTOOS CURE CANCER | $13,685 | V24 | inferred 0.50 | | Canyon Country, CA | 2017 |
| CHICAGO PSYCHOANALYTIC SOCIETY | $12,941 | V24 | inferred 0.50 | science: research education | Chicago, IL | 2019 |
| ASSOCIATION FOR THE STUDY OF THE CUBAN ECONOMY INC | $12,728 | V24 | inferred 0.60 | | Miami, FL | 2016 |
| CONFERENCE FOR THE STUDY OF POLITICAL THOUGHT ASSOCIATION | $8,565 | V24 | published | | New York, NY | 2024 |
| DEMOCRACYLAB US | $6,448 | V24 | published | | Salem, OR | 2023 |
| NATIONAL CENTER FOR CONSTITUTIONAL STUDIES | $5,220 | V24 | published | | Malta, ID | 2025 |
| ARIZONA EDUCATION PROJECT INC | $5,044 | V24 | inferred 0.70 | | Phoenix, AZ | 2019 |
| INSTITUTE FOR DEMOCRACY AND DEVELOPMENT POLITA INC | $4,900 | V24 | published | | Silver Spring, MD | 2024 |
| NETWORK FOR EDUCATIONAL OPPORTUNITY | $4,747 | V24 | published | | Fresno, CA | 2016 |
| THE CAMPAIGN FINANCE INSTITUTE | $3,713 | V24 | inferred 0.70 | | Washington, DC | 2017 |
| Pearson Foundation | $750 | V24 | inferred 0.40 | | Austell, GA | 2015 |
| SCIENCE OF LAWS INSTITUTE | $250 | V24 | published | | Poway, CA | 2025 |
| PARTNERSHIP FOR MASSACHUSETTS FUTURE | $121 | V24 | inferred 0.50 | | Boston, MA | 2022 |
| THE GILLIGAN FOUNDATION | $92 | V24 | inferred 0.60 | | Columbus, OH | 2010 |
| COMMITTEE FOR A FAIR JUDICIARY | $70 | V24 | published | | Washington, DC | 2024 |
| ADI ENDOWMENT INC | $52 | V24 | inferred 0.55 | | Alexandria, VA | 2018 |
| Foundation for the Study National Civic & International Affairs | $0 | V24 | inferred 0.45 | | New York, NY | 2013 |
| CROWN OF THE CONTINENT INSTITUTE | $0 | V24 | inferred 0.50 | | Kalispell, MT | 2023 |
| PACIFIC POLICY RESEARCH FOUNDATION | $0 | V24 | published | | Granite Bay, CA | 2018 |
| BY THE PEOPLE | $0 | V24 | published | | Salt Lake City, UT | 2025 |
| SAVINGUSA | $0 | V24 | inferred 0.50 | | Washington, DC | 2023 |
| CONFERENCE GROUP ON GERMAN POLITICS | - | V24 | inferred 0.70 | | Dunham, NH | |
| NEW HAMPSHIRE PUBLIC INTEREST | - | V24 | inferred 0.55 | | Hanover, NH | |
| HUDSON INSTITUTE INC | - | V24 | inferred 0.40 | | Hudson, MA | |
| THE CENTER FOR AMERICAN STUDIES AT | - | V24 | inferred 0.55 | | Concord, MA | |
| LIGHTHOUSE INSTITUTE FOR PUBLIC | - | V24 | inferred 0.40 | | Cochituate, MA | |
| INSTITUTE FOR THE 21ST CENTURY INC | - | V24 | inferred 0.40 | | Boston, MA | |
| INSTITUTE OF MANAGEMENT SCIENCES | - | V24 | inferred 0.40 | | Providence, RI | |
| INSTITUTE OF MANAGEMENT SCIENCES | - | V24 | inferred 0.40 | | Providence, RI | |
| INSTITUTE OF MANAGEMENT SCIENCES | - | V24 | inferred 0.40 | | Providence, RI | |
| NEW ENGLAND SKEPTICAL SOCIETY INC | - | V24 | inferred 0.60 | | Hamden, CT | |
| FEMINIST ETHICS AND SOCIAL THEORY | - | V24 | inferred 0.40 | | Garrison, NY | |
| CENTER FOR THE STUDY OF MUNICIPAL | - | V24 | inferred 0.50 | | Oyster Bay, NY | |
| NEW DIALOGUE STUDY GROUP INC | - | V24 | inferred 0.40 | | Rego Park, NY | |
| DON LUIGI STURZO POLITICAL SCIENCE | - | V24 | inferred 0.70 | | Brooklyn, NY | |
| ETIQUETTE SCIENCE & POLITICS | - | V24 | inferred 0.30 | | Sachse, TX | |
| INSTITUTE FOR PUBLIC AND GOVERNMENT | - | V24 | inferred 0.50 | | Everett, WA | |
| CONEG POLICY RESEARCH CENTER INC | - | V24 | inferred 0.50 | | Washington, DC | 2025 |
| BIOPOLITICS U S A INC | - | V24 | inferred 0.30 | | New York, NY | |
| CENTER FOR ADVANCED STUDIES IN | - | V24 | inferred 0.50 | | Katonah, NY | |
| PSYCHOBIOENERGY FOUNDATION INC | - | V24 | inferred 0.40 | | New York, NY | |
| CIPPEC INC | - | V24 | inferred 0.45 | | New York, NY | |