Citizens United: How One Court Decision Turned Elections Into Auctions

You have probably felt it — the sense that your vote matters less than it used to. That elections are decided before you ever walk into a booth. That the candidates who win are the ones who raised the most money, not the ones with the best ideas.

That feeling is not paranoia. It has a specific cause, a specific date, and a name: Citizens United.

What actually happened

On January 21, 2010, the Supreme Court issued a 5–4 ruling in Citizens United v. Federal Election Commission that changed the rules of American elections permanently.

The case started small. Almost absurdly small. A conservative nonprofit called Citizens United had made a 90-minute documentary attacking Hillary Clinton during the 2008 primary. They wanted to distribute it through video-on-demand and run ads promoting it. The Federal Election Commission said no — under existing law, corporations couldn't run political ads within 30 days of a primary. Citizens United sued.

That dispute over one attack documentary became the vehicle for one of the most consequential rulings in American history.

The Court's majority, written by Justice Anthony Kennedy, held that the government cannot limit how much corporations and unions spend on political advertising. The First Amendment protects political speech. Spending money enables speech. Therefore, limiting spending limits speech — and the government cannot do that. Simple logic. Sweeping consequences.

The argument they made — and why it sounds reasonable

Here is the strongest version of the Citizens United argument, stated fairly:

Political speech is the most important speech there is. The First Amendment exists precisely to protect speech about candidates, elections, and government policy. When the government decides who can speak and how loudly, it puts its thumb on the scale. A corporation is made up of people — shareholders, employees, citizens — who have constitutional rights. They don't surrender those rights by organizing together. Restricting corporate political spending restricts the real human beings behind the corporation.

This is not a crazy argument. The logic has roots in genuine constitutional principle. The founders did not trust government with power over political speech, and that instinct is sound.

But there is a difference between protecting speech and guaranteeing amplification. The consequences of Citizens United make clear which side of that line the ruling landed on.

What happened after

Before Citizens United, corporations and unions were prohibited from using their general treasury funds for political advertising. That restriction had existed in some form since the Tillman Act of 1907 — 103 years of law, passed precisely because Congress understood that unlimited corporate money would corrupt democratic elections. Citizens United erased it in a single ruling.

Within months, a follow-on court decision (SpeechNow.org v. FEC) created the Super PAC — an organization that can raise unlimited money from corporations, billionaires, and unions, and spend it on elections without limit, so long as it doesn't formally coordinate with candidates. In practice, former campaign staffers run these organizations while their former bosses look the other way.

The money moved fast:

That is not the story of more citizens participating. It is the story of fewer people spending vastly more.

In 2012, the top 1% of super PAC donors provided 77% of all super PAC funding. By 2024, that number had reached 97%. In the 2024 election, just 100 billionaires contributed $2.6 billion — nearly one-fifth of all election spending in the entire country. One single billionaire donated $290 million to outside spending groups in a single election cycle. That is equivalent to the combined donations of 3 million ordinary Americans.

This is what "protecting speech" produced.

What the Court got wrong

The majority argued that independent spending — money spent without formally coordinating with a candidate — doesn't corrupt elections. Justice Kennedy wrote that independent expenditures "do not give rise to corruption or the appearance of corruption."

Justice Stevens, writing the principal dissent, saw it differently:

"Corruption can take many forms. Bribery may be the paradigm case. But the difference between selling a vote and selling access is a matter of degree, not kind. And selling access is not qualitatively different from giving special preference to those who spent money on one's behalf."

You don't need to hand a politician a briefcase of cash for money to corrupt the relationship. You need only for a senator to know that a billionaire spent $50 million helping elect them — and to know that the same billionaire could spend $50 million defeating them next cycle. That is not an exchange. It is a dynamic. It does not require coordination to work.

The majority said money enables speech, and protecting speech means protecting the right to spend. What it failed to account for is that when some speakers have ten thousand times more money than others, protecting everyone's right to speak equally produces a wildly unequal result. The person with a microphone and the person whispering in a crowd both technically have free speech. In practice, one of them controls the room.

There is also a dark money problem the ruling didn't address at all. Super PACs must disclose their donors. But a corporation can funnel money through a 501(c)(4) nonprofit — a "social welfare" organization that faces no disclosure requirements. The nonprofit runs the ads, the donor stays invisible, and voters have no idea who is trying to persuade them. In 2024, dark money spending exceeded $1 billion for the first time in a presidential election.

What this means for your vote

Your vote still counts. Citizens United did not eliminate elections or make them fraudulent. This is important to say clearly.

What it did is change the context in which elections happen. Candidates now spend enormous time and energy raising money from the people who have it. The issues those donors care about get more advertising, more attention, and more airtime than the issues they don't. The candidates willing to accept that money advance through primaries. The ones who aren't, struggle. By the time you vote, the field has already been shaped by money you never saw, from donors you will never know.

The people writing the checks are not the same as the people casting the ballots. But they have dramatically more influence over who appears on the ballot in the first place.

Eighty percent of Americans oppose Citizens United. That includes 76% of Republicans and 81% of Independents. It is one of the few things this country broadly agrees on across partisan lines. And yet the DISCLOSE Act — which wouldn't even overturn Citizens United, but would merely require dark money donors to identify themselves — cannot pass the Senate.

The people who benefit most from the current system are the ones voting on whether to change it.

The root cause

This is the first article in a series on how American elections work — and where they don't. Citizens United is the right place to start because it is the legal foundation on which everything else rests. The explosion of super PACs, the rise of dark money, the billionaire megadonors who can effectively buy a Senate primary — none of it exists in its current form without the 5–4 decision handed down on January 21, 2010.

The Constitution wasn't changed. The rules were. And since the rules changed, elections have looked less like a competition of ideas and more like an auction — where the bidders are anonymous, the amounts are unlimited, and the outcome is shaped before most voters know who's running.

That is the problem. Naming it clearly is the first step.