EDF Action, also known as the Environmental Defense Action Fund, is a 501(c)(4) nonprofit organization incorporated in Delaware that serves as the advocacy and political arm of the Environmental Defense Fund (EDF), a prominent 501(c)(3) environmental advocacy group. It focuses on building political power to advance environmental policies through lobbying, grassroots mobilization, ballot initiatives, electoral activities, and campaign efforts. The organization educates the public on sound environmental policies, advocates for effective laws to protect environmental rights, and works across the political aisle to combat climate change, reduce pollution, and promote sustainable prosperity. EDF Action receives significant funding through grants from EDF Inc., individual contributions, and institutional donors, which it uses to support related entities like EDF Action Votes, Inc. (a Section 527 political action fund) and its own Political Action Committee (PAC) for bipartisan contributions to pro-environment candidates. It mobilizes constituents to influence elected officials at all levels of government and invests in campaigns to elect leaders who prioritize environmental protection. Led by President David Kieve, EDF Action operates with a staff of several hundred and has been involved in high-profile initiatives, such as investing alongside the National Wildlife Federation Action Fund to support environmental ballot measures. As an affiliated entity of EDF, it leverages the parent organization's resources while independently pursuing advocacy goals.