A Project of The Annenberg Public Policy Center

AFL-CIO

Large federation of labor unions is strongly Democratic.

Priorities USA/Priorities USA Action

A super PAC and a nonprofit sister organization launched by former Obama White House staffers as a Democratic counter to American Crossroads/Crossroads GPS.

American Bridge 21st Century

A liberal super PAC that conducts opposition research to aid Democratic candidates and organizations.

NextGen Climate Action

A liberal super PAC founded by San Francisco billionaire and climate-change activist Tom Steyer that focuses on environmental issues.

League of Conservation Voters

An environmental group launched in 1969 that targets a “Dirty Dozen” list of politicians for defeat.