Dark Money in Elections: The Hidden Billions
Billions of dollars flow into American elections with no public disclosure of who provided the money. Here is how the system works, why Citizens United matters, and what to emargin:0 0 8px;"> Billions of dollars flow into American elections with no public disclosure of who provided the money. Here is how the system works, why Citizens United matters, and what to expect in the 2026 midterm cycle.
- Dark money refers to political spending by 501(c)(4) nonprofits that do not disclose their donors — legal under Citizens United and FEC interpretation.
- Dark money spending has grown from $5M in 2006 to $1B+ in presidential cycles since Citizens United.
- Both parties use dark money organizations — Democratic-aligned groups like the Sixteen Thirty Fund and Republican groups like the Judicial Crisis Network have spent hundreds of millions without disclosure.
- The DISCLOSE Act (to require dark money disclosure) has passed the House multiple times but has been blocked in the Senate by filibuster, with Republicans opposing disclosure requirements.
The Campaign Finance Structure: PAC vs. Super PAC vs. 501(c)(4)
Before Citizens United, campaign finance law drew a cleaner line between disclosed and undisclosed political activity. Today, three main structures dominate outside spending, each with different disclosure rules.
Traditional PAC: Can give directly to candidates but faces strict contribution limits ($5,000 per candidate per election). Must disclose all donors. Highly regulated. Used for direct candidate support.
Super PAC: Created by the Citizens United and SpeechNow court decisions in 2010. Can raise unlimited amounts from individuals, corporations, and unions. Cannot give directly to candidates or coordinate with them. Must disclose donors to the FEC — but disclosure can lag months behind the spending. The "independence" requirement is loosely enforced, and Super PACs aligned with specific candidates (like "Restore Our Future" for Romney or Trump-aligned PACs) are common.
501(c)(4) social welfare organization: This is the primary dark money vehicle. The IRS classifies these as "social welfare" nonprofits whose primary activity must be non-political. They do not disclose donors publicly. They can spend on elections as long as it is not their "primary purpose" — a vague standard the IRS has inconsistently enforced. A 501(c)(4) can donate to a Super PAC; the Super PAC discloses the 501(c)(4) as its donor but not the underlying funders. This is the fundamental dark money architecture.
Citizens United: The Case That Changed Everything
Citizens United v. FEC (2010) held 5-4 that the First Amendment prohibits the government from restricting political spending by corporations, associations, and labor unions. The majority opinion, written by Justice Kennedy, held that spending money on political speech is protected speech, and that the government cannot distinguish between speakers based on their corporate identity. It overruled two prior precedents (Austin and McConnell).
Citizens United did not eliminate disclosure requirements — the majority opinion specifically upheld disclosure rules. What eliminated dark money's growth was the IRS's inconsistent enforcement of the 501(c)(4) "primary purpose" test and subsequent court decisions that limited the FEC's ability to require donor disclosure for groups running issue ads. The Citizens United decision is frequently blamed for dark money growth, but the full story involves multiple legal and regulatory failures.
President Obama publicly criticized Citizens United in his 2010 State of the Union address (to the faces of sitting Supreme Court justices). The ruling became a lasting Democratic campaign issue. Republicans initially benefited more, with groups like Karl Rove's Crossroads GPS and the Koch network's Americans for Prosperity using the 501(c)(4) structure aggressively. Democratic-aligned groups (including Arabella Advisors-linked networks) have since built comparable infrastructure.
Dark Money Networks by Party Alignment
| Network / Organization | Alignment | Key Activities |
|---|---|---|
| Koch network (AFP, LIBRE, etc.) | Republican / Libertarian | Voter mobilization, issue advertising, state legislature races |
| Arabella Advisors network | Democratic | Fiscal sponsorship for progressive causes; largest liberal dark money network by assets |
| One Nation | Republican (McConnell-aligned) | Senate elections; linked to Senate Leadership Fund Super PAC |
| Majority Forward | Democratic (Schumer-aligned) | Senate elections; linked to Senate Majority PAC |
| Judicial Crisis Network | Republican (judicial) | Supreme Court confirmation battles; dark money for judicial nominees |
Frequently Asked Questions
Can foreign nationals give dark money to US elections?
Federal law prohibits foreign nationals from contributing to US elections, directly or indirectly. However, the opacity of 501(c)(4) donor networks makes foreign money in dark money a known enforcement challenge. The FEC and DOJ have investigated but faced evidentiary hurdles because the donors are not disclosed. The DISCLOSE Act, which would require 501(c)(4)s and similar groups to disclose donors in political context, has passed the Democratic House but failed in the Senate multiple times over Republican opposition, often citing First Amendment concerns.
Which party uses more dark money?
Historically, Republican-aligned networks built the dark money infrastructure first and used it more aggressively in the 2010-2016 cycle. By the 2018 and 2020 cycles, Democratic-aligned groups had significantly closed the gap and in some cycles exceeded Republican dark money totals. The current picture is that both parties rely heavily on dark money, making it a structural feature of the system rather than a partisan one — though the policy debate about disclosure remains sharply partisan, with most Democrats supporting disclosure requirements and most Republicans opposing them.
Is there any chance dark money disclosure requirements pass?
The DISCLOSE Act and similar legislation have repeatedly failed due to Republican filibuster in the Senate. With Republicans controlling the Senate in 2025-26, legislative disclosure requirements are extremely unlikely. Administrative action by the FEC or IRS could in theory require more disclosure, but the FEC has been deadlocked (3-3 partisan split) for years. Advocates of disclosure have focused on state-level laws, and several states now require more disclosure than federal law. The Supreme Court has generally upheld disclosure requirements as constitutional — the barrier is legislative, not judicial.
