Campaign Finance in the USA

American elections are the most expensive in the democratic world, and the reasons are structural rather than accidental.

• The calendar is enormous. A presidential campaign runs from the invisible primary through fifty state contests, a convention and a general election — well over eighteen months of paid staff, offices and travel.
• Campaigns are candidate-centred. Money is raised by the candidate's own organisation, not distributed by a central party as in the UK.
• Advertising has to be bought. There is no equivalent of the free party election broadcast, so reaching voters means purchasing television, radio and digital time.
• There is no ceiling on what a campaign may spend, provided it declines public funding — which every major-party presidential candidate in recent cycles has done.

Election	Money raised or spent
2020 (all November contests)	Close to $14 billion, more than double the 2016 figure
2024, spent on campaigning	About $3.5 billion between Trump and Harris
2024, raised by each candidate	Harris $2.3 billion; Trump $1.8 billion

The two 2024 rows are different measures — what the campaigns spent on campaigning against what each of them raised in total — so they are not meant to add up. Roughly half of everything the two 2024 campaigns raised went on advertising and media, and the bulk of that was spent in the seven swing states. An estimated 14% of Republican funds went instead on fighting the legal cases in which Trump was involved — a reminder that campaign money is not spent solely on persuading voters.

(Extra context — the comparison with UK party funding belongs to section 6.2.9 of the specification, not 5.1.2. The contrast is worth holding in mind: UK campaigns operate under a national spending limit, so the American debate about caps has no direct British equivalent.)

The distinction the specification asks you to hold is between money that reaches a candidate and money that does not.

Term	Who receives it	Limits at the 2024 election
Hard money	The candidate's campaign directly	$3,300 per individual donor, per candidate, per election
Hard money via a PAC	The candidate's campaign, through a committee	$5,000 per PAC, per candidate, per election
Soft money	A party organisation or an outside group	Independent spending by outside groups is uncapped

Hard money is capped and disclosed. Soft money is the pressure valve: it flows to organisations that spend on a candidate's behalf without handing the campaign a cheque.

The small-donor picture. Not all of the money comes from the wealthy. In 2020, 20% of campaign funds came from donors giving $200 or less, six percentage points more than in 2016, and more than half of Democratic fundraising came from small online donations. Digital fundraising has widened participation, and each donation is also a signal of enthusiasm that campaigns use to demonstrate strength.

The concentration picture. The same election showed how narrow the base of large donations is. One research group found that more cash came from Washington DC than from twenty states combined, and that Biden raised 10% of his funds from just six zip codes in Washington DC, New York and Indianapolis. Those donors are not a cross-section of the country whose interests are at stake.

Three statutes and one public funding scheme make up the framework Congress has built.

The Federal Election Campaign Act 1971, amended 1974

Passed and then strengthened after Watergate, FECA created the Federal Election Commission, required disclosure of donations, capped contributions to candidates, and set up an optional system of public funding.

Public funding, established 1974

Presidential candidates may claim federal money to match privately raised contributions, but in exchange they accept a relatively low ceiling on total spending. The scheme has collapsed in practice at presidential level: Trump and Biden both ignored it in 2020, as every major-party nominee had since Barack Obama became the first to decline it for a general election in 2008, because private fundraising allows far higher legal expenditure.

The Bipartisan Campaign Reform Act 2002 (McCain–Feingold)

BCRA attacked the soft money loophole. It banned national party committees from raising or spending soft money, and restricted electioneering communications — broadcast advertising naming a candidate — funded by corporations or unions within 30 days of a primary or 60 days of a general election.

The pattern to notice is a cycle rather than a straight line. Congress legislates, campaigns and donors find a route round the rules, and the Supreme Court then decides how much of the legislation survives. That cycle is the reason 5.1.2 pairs "current legislation" with "the implications of Supreme Court rulings".

The single most important decision in this topic is the earliest one.

Challenged on the 1974 FECA amendments, the Supreme Court split the statute in two:

Upheld	Struck down
Limits on contributions to a candidate	Limits on a campaign's total expenditure
Compulsory disclosure of donations	Limits on independent spending by outsiders
The optional public funding scheme	Limits on what a candidate may spend of their own money

The reasoning is what matters. The Court treated the spending of money to communicate a political message as expression protected by the First Amendment. A cap on a donation restricts only the act of giving, and can be justified by the risk of corruption; a cap on spending restricts the quantity of political speech itself, and cannot.

The consequence has shaped every attempt at reform since. Congress can regulate what goes into a campaign. It has very limited power to regulate what a campaign, or anybody else, spends. Every reform argument in this topic runs into that wall.

Citizens United v Federal Election Commission (2010) applied Buckley's logic to corporations. The Court held that the First Amendment bars government from restricting independent political expenditure by corporations and unions, striking down the relevant part of BCRA.

The practical result was the Super PAC. A Super PAC may raise and spend unlimited amounts to support or oppose a candidate, on two conditions: it may not donate to the campaign, and it may not coordinate with it.

Worked example — Super PACs in 2020. The highest-spending committees were almost evenly divided between the two sides, with America First Action and Preserve America PAC backing Trump, and American Bridge 21st Century and Unite the Country backing Biden. The pattern undercuts the claim that outside money uniformly favours one party.

Worked example — America PAC in 2024. Elon Musk, backing Trump, gave away $1 million a day to registered voters in swing states who signed a petition for his Super PAC, America PAC. Critics argued that this came close to paying people to register and vote, but the payments continued to the end of the campaign. The same committee recruited paid canvassers for work normally done by volunteers. Individual Super PAC funders included Timothy Mellon on the Republican side and Michael Bloomberg on the Democratic side.

Two further rulings complete the picture. McConnell v FEC (2003) upheld the central provisions of BCRA, showing that the Court was not uniformly hostile to regulation. McCutcheon v FEC (2014) struck down the aggregate ceiling on what one donor could give across all candidates and committees, while leaving the per-candidate cap standing.

The case that money is decisive:

• It determines who can compete at all. Kamala Harris left the 2020 Democratic race in December 2019 because she could not fund a campaign, before any voter had a say.
• It buys the swing-state advertising that decides the Electoral College. About half of the $3.5 billion spent in 2024 went on advertising, concentrated in seven states.
• Money follows incumbency in congressional races, which entrenches sitting members.
• Donors are unrepresentative, so the agenda tilts towards their concerns.

The case that money is not decisive:

Election	Who raised more	Who won
2016	Hillary Clinton, close to double Trump's total	Trump
2020	Biden, holding $144 million more cash by early October	Biden
2024	Harris, $2.3 billion to Trump's $1.8 billion	Trump

Michael Bloomberg makes the point most sharply: he spent around $300 million on advertising in the 2020 Democratic primaries and withdrew without the nomination, because money could not supply campaigning skill. Trump's 2020 incumbency gave him a $72 million fundraising lead in the spring, and he lost anyway.

A defensible judgement is that money is a necessary but not sufficient condition. Underfunded candidates are eliminated before voters see them, so money sets the field; but once two well-funded candidates are in the race, the record, the candidate and the economy decide it.

The specification asks about the difficulty of achieving effective reform. Four obstacles explain it.

1. The First Amendment

After Buckley and Citizens United, statutory caps on independent spending are unconstitutional. Effective reform would require either a constitutional amendment or a Supreme Court willing to overturn its own precedent. As of September 2026 the Court has a 6–3 Republican-appointed majority, and its 2025–26 term produced ideologically split rulings on campaign finance, so the legal position continues to move.

2. Incumbents write the rules

Members of Congress are the beneficiaries of a system that channels interest group and PAC money towards sitting members. Asking them to legislate against their own advantage is a structural problem, not a matter of goodwill.

3. The regulator is designed to deadlock

The Federal Election Commission has six commissioners, no more than three from any one party, and needs four votes to act. An evenly split commission can stall enforcement on precisely the contested cases that matter most.

4. Disclosure has gaps

Groups organised as tax-exempt social welfare organisations under section 501(c)(4) of the tax code may spend on politics without naming their donors. Money routed that way is described as dark money: it is visible in the advertising it buys, but its source is not.

1. Saying Citizens United removed all limits on donations

It removed limits on independent expenditure by corporations and unions. Caps on what a donor may give straight to a candidate survived, and stood at $3,300 per election in 2024. Getting this distinction right separates a precise answer from a vague one.

2. Using PAC and Super PAC interchangeably

A PAC donates to candidates within a cap. A Super PAC spends without a cap but may not donate or coordinate. Both terms appear in the specification's key terminology, so both need to be used accurately.

3. Asserting that the richer candidate wins

The two most recent elections in which the better-funded candidate lost — 2016 and 2024 — point the other way, while 2020 does not. Use all three together and the pattern becomes an argument rather than an assertion.

4. Treating campaign finance law as settled

It is a moving target: FECA 1971, Buckley 1976, BCRA 2002, McConnell 2003, Citizens United 2010, McCutcheon 2014. Show the sequence and you demonstrate the analytical point that legislation and litigation alternate.

5. Leaving out the reform debate

Section 5.4 asks specifically about the difficulty of achieving effective reform. An answer that describes the rules without explaining why they resist change has covered AO1 and left AO2 and AO3 marks unclaimed.

6. Using undated figures

Contribution caps are indexed and rise between cycles, and spending totals grow every election. Attach a year to every number: "$3,300 per candidate at the 2024 election" is worth more than "about $3,000".