Wikipedia offers a concise definition of a Political Action Committee (PAC):

“In the United States, a political action committee (PAC) is a tax-exempt 527 organization that pools campaign contributions from members and donates those funds to campaigns for or against candidates, ballot initiatives, or legislation.”

One good definition of gray money comes from the Brennan Center for Justice:

What causes gray money? Disclosure rules that overlook the true sources of funding. Super PACs — PACs that are supposed to advertise independent of candidates and, after Citizens Unitedand related cases, can raise and spend unlimited sums — typically must disclose their donors.

But increasingly they have disclosed not individuals or businesses, whose interests are relatively apparent, but rather other PACs. That money might be traceable, through multiple layers of PAC disclosures, to an original source. But most people lack the time to dig this deeply, and, increasingly, understaffed newsrooms do, too. (Super PACs sometimes disclose nonprofits as donors. Because nonprofits generally do not have to disclose their donors, we consider PAC spending derived from such sources to be dark money, not gray.)

While PACs are a legitimate way for groups to support causes and candidates, they also provide an avenue for immense influence by wealthy donors and organizations. By raising and channeling vast sums of money, PACs can create significant disparities in access to elected representatives and influence over policy decisions.

According to data obtained from NJ Elec, over 50 Million Dollars were donated to County Party Committees and PACs across New Jersey’s 21 Counties across a five year period (2019 through 2023).