A super PAC supporting Republican presidential candidate and retired neurosurgeon Ben Carson.
A Republican super PAC supporting Marco Rubio for president and its sister 501(c)(4) organization.
A liberal super PAC and an advocacy group founded by San Francisco billionaire and climate-change activist Tom Steyer.
A Democratic super PAC supporting Martin O’Malley for president.
A super PAC that supports Democratic candidates for the U.S. House of Representatives, aiming to put them back in the majority.
A Democratic super PAC devoted to regaining a Democratic majority in the U.S. Senate.
A Republican super PAC supporting Mike Huckabee for president.
A Republican super PAC supporting Jeb Bush for president.
A pro-Hillary Clinton super PAC that was founded by David Brock, the creator of the liberal website Media Matters.
A Democratic super PAC supporting Hillary Clinton for president.