Unite the Union is a left-of-center labor union, and the largest in the United Kingdom and the Republic of Ireland. It is the largest individual donor to the Labour Party, the left-wing major party in the U.K.,

The Transportation Trades Department (TTD) of the AFL-CIO is a coalition of 33 unions that advocate for unionized workers and labor unions’ institutional interests in the transportation industry. The TTD tends to support left-of-center economic goals, including increased labor regulations, increased infrastructure spending, opposition to privatization, and support for

The American Prospect is a left-progressive publication that promotes left-of-center public policy through articles on its website and in print. Founded in 1989 by Robert Kuttner, Paul Starr, and former Clinton administration Secretary of Labor Robert Reich, the Prospect has received grants from a number of left-of-center

Also see Tides Nexus Tides Advocacy (formerly The Tsunami Fund, The Advocacy Fund, and the Tides Advocacy Fund) is a left-of-center advocacy organization associated with the Tides Nexus, a collection of center-left pass-through funders and fiscal sponsorship nonprofits grouped around the Tides Foundation. While Tides Advocacy has

Teamsters for a Democratic Union (TDU) is an activist caucus within the International Brotherhood of Teamsters (IBT), which represents transportation workers and is one of the largest private-sector unions in the United States. The caucus claims to represent the interests of rank-and-file union members and hold union officials

Students for Sensible Drug Policy (SSDP) is a chapter-based drug-legalization advocacy organization with affiliates in over 30 countries. 1 The SSDP network advocates for drug decriminalization locally, nationally, and internationally while arguing for the de-stigmatization of

Southern Partners Fund (SPF) is an Atlanta-based foundation and grantmaking organization that has given more than $20,000,000 to left-of-center activist organizations in the American South since its founding in 1998. 1 SPF runs the

The Skoll Foundation was founded by billionaire philanthropist Jeffrey Skoll. 1 Mr. Skoll is also the founder of Participant, a firm that produces films such as An Inconvenient Truth, the 2006

San Francisco Labor Council (SFLC) is a local union federation affiliated with the AFL-CIO. 1 SFLC promotes left-of-center labor policies, including requiring employers to negotiate with minority unions — made up of

The Rosenthal Family Foundation is the private foundation of “Everybody Loves Raymond” creator Philip Rosenthal and his wife, actress Monica Horan Rosenthal. The Foundation supports left-of-center advocacy groups, arts and culture institutions, and food insecurity relief groups in the greater Los Angeles area and around the world. Both Rosenthal and

Rosa Luxemburg Stiftung (Rosa Luxemburg Foundation) is a German government-funded think tank that is associated with the German socialist party Die Linke (The Left). 1 Founded in 1990, the foundation

ReThink Media, founded in 2008, is a combination public relations firm, advocacy organization, and pass-through funding entity for left-of-center organizations. It uses messaging techniques through all forms of media to promote the left-of-center framing of issues related to national security, ethnic and religious minority interests, and left-of-center electoral legislation. ReThink

The Retail, Wholesale, and Department Store Union (RWDSU) is a labor union that is a semi-autonomous division of the United Food and Commercial Workers (UFCW). Its members come from various sectors, including retail, manufacturing, service, and health care industries throughout the United States and Canada.

Progressive Maryland is a lobbying and advocacy organization and network of left-progressive organizations in Maryland. The organization works to promote its agenda by outreach, public education campaigns, lobbying, direct public action, research, and support for left-of-center candidates. The Progressive Maryland Education Fund, Progressive Maryland’s affiliate organization, supports these efforts.

PowerPAC is a left-of-center lobbying organization based in San Francisco that specializes in voter mobilization. The organization was founded by liberal activist Steve Phillips and largely funded by left-of-center philanthropist Susan Sandler.

The Pennsylvania AFL-CIO is a left-leaning federation of labor unions in Pennsylvania. The organization was formed in 1960 following a merger of two statewide labor federations and has a membership consisting of dozens of local labor unions and regional labor councils. The organization is a state-level affiliate of left-leaning national

The Open Society Policy Center (OSPC) is a lobbying group associated with the Open Society Network and the Open Society Foundations, the principal advocacy philanthropic efforts of left-of-center financial billionaire George Soros. From May 2002 to April 2023, OSPC has reported spending over $161 million on lobbying.

The Ohio AFL-CIO is the state affiliate for the AFL-CIO labor union federation in Ohio. 1 The union is also affiliated with the Action Network, an online tool for left-progressive

The Office and Professional Employees International Union (OPEIU) is a trade union representing white-collar clerical and office workers in the public and private sectors. It is notable for its efforts to organize university student workers, nonprofit employees, and high-tech workers. It is a member of the AFL-CIO labor union

Ocean Conservancy is a Washington, D.C.-based environmentalist advocacy group that designs ocean policies for federal and state governments. It tends to advocate for left-of-center environmentalist policies. Though the Conservancy is broadly concerned with ocean-based conservation, including ocean acidification, coastal cleanups, and fishing, its focus has shifted towards climate change at