Political Action Committee (PAC) — A popular term for a political committee organized for the purpose of raising and spending money to elect and defeat candidates. In the United States and Canada, a political action committee (PAC) is an organization that pools campaign contributions from members and donates those funds to a campaign for or against candidates, ballot initiatives,or legislation.
Most PACs represent business, labor or ideological interests. Technically known as independent expenditure-only committees, Super PACs may raise unlimited sums of money from corporations, unions, associations and individuals, then spend unlimited sums to overtly advocate for or against political candidates.
One major misconception about super PACs is the incorrect belief that they do not disclose their donors. In fact, all super PACs are required by law to disclose their donors. ... Additionally, super PACs must report all of their expenditures.
A PAC is limited in how much it can give and raise from individuals, other PACs or party committees in a calendar year. Many are sponsored by trade associations, such as the American Medical Association, or members of labor unions.
PACs must disclose to the FEC where they get their money and how they spend it.