Political activity board of trustees (PAC), in U.S. governmental issues, an association whose reason for existing is to raise and convey crusade assets to applicants looking for political office. PACs are by and large shaped by companies, worker's parties, exchange affiliations, or different associations or people and channel the willful commitments they raise to a contender for elective workplaces, principally in the U.S. Place of Representatives and the U.S. Senate.

PACs may likewise spend their assets on what is named free consumptions—characterized in law as a message "explicitly upholding the decision or annihilation of an unmistakably distinguished hopeful that isn't made in collaboration, meeting, or show with, or at the demand or proposal of, an applicant, a competitor's approved panel, or their specialists, or a political gathering or its operators."
The main PAC was made in 1944 by the Congress of Industrial Organizations, which looked to raise assets to help the reelection of Pres. Franklin D. Roosevelt. PACs were an auxiliary piece of political crusades in the United States until the point when the Federal Election Campaign Act of 1971.

Apparently, the law was set up to diminish the impact of cash in battles by setting strict cutoff points on the sum of a specific company, association, or private individual could provide for an applicant. By requesting littler commitments from a considerably bigger number of people, notwithstanding, PACs could go around these confinements and give generous assets to competitors. Following the changes, the quantity of PACs multiplied, from around 600 in the mid-1970s to more than 4,000 by 2010. With this expansion came a gigantic heightening in the cost of running for government office in the United States.
While most PACs have verifiably been related with organizations or associations, in the mid 21st century new sorts of PACs started to apply more noteworthy impact. Among them are Leadership PACs, which are frequently shaped by lawmakers who may try to higher office or more impact inside their political gathering by raising assets and dispensing them to the crusades of different competitors; Super PACs, which were built up in 2010 after the U.S. Preeminent Court's Citizens United v. Government Election Commission choice and which enable the two enterprises and associations to make autonomous consumptions from their general treasuries; and nonconnected PACs, which are free of organizations, associations, and political gatherings and which make commitments and uses to help a specific philosophy or issue.