A Project of The Annenberg Public Policy Center

Senate Majority PAC

A Democratic super PAC devoted to restoring a Democratic majority in the U.S. Senate.

Great America PAC

A traditional political action committee and super PAC hybrid that supports President Donald Trump.

Club for Growth Action

The super PAC of the conservative Club for Growth, which advocates for limited government.

U.S. Chamber of Commerce

The world’s largest business organization, representing more than 3 million businesses.

Senate Leadership Fund

A Republican super PAC created by allies of Senate Majority Leader Mitch McConnell.

NextGen Climate Action Committee

NextGen Climate Action Committee is a liberal environmental advocacy organization founded by San Francisco billionaire Tom Steyer.