FEC Disclosure Rules

The Federal Election Commission requires political committees to file regular reports disclosing their receipts and disbursements. Super PACs must disclose their donors. However, significant loopholes exist: 501(c)(4) "social welfare" organizations can spend on elections without disclosing their donors, and they can funnel money to Super PACs, creating layers of opacity. The FEC's 3-3 partisan split often prevents enforcement actions, effectively weakening disclosure requirements.

Dark Money

"Dark money" refers to political spending by nonprofit organizations that are not required to disclose their donors. These include 501(c)(4) social welfare organizations, 501(c)(6) trade associations, and some 501(c)(5) labor organizations. In the 2020 cycle, dark money groups spent over $1 billion. The true scale is likely much larger, as these organizations can transfer funds to Super PACs and other entities that do report spending, obscuring the original source of the money.

Issue Ads vs. Express Advocacy

Federal law distinguishes between express advocacy (ads that explicitly say "vote for" or "vote against" a candidate) and issue ads (ads that discuss policy issues and may mention candidates but stop short of explicit endorsement). Issue ads are subject to fewer disclosure requirements and restrictions, making them a popular vehicle for political spending that avoids FEC oversight. The line between the two is often razor-thin, with "issue ads" clearly designed to influence elections while technically only discussing policy.

527s vs. 501(c)(4)s

527 organizations (named after the IRS code section) are tax-exempt groups created to influence elections. They must disclose their donors to the IRS. Super PACs are a type of 527. By contrast, 501(c)(4) organizations are classified as "social welfare" groups. They can engage in limited political activity (typically less than 50% of their spending) without disclosing donors. This distinction is critical: a donor can give to a 501(c)(4), which then gives to a 527/Super PAC, effectively laundering the donor's identity from public filings. This is the primary mechanism behind "dark money" in American politics.

Data is illustrative and based on historical trends and projections. Actual FEC filings may differ. Sources include FEC.gov, OpenSecrets.org, and AdImpact political ad tracking.