Argentina has chosen Javier Milei. Economy minister Sergio Massa conceded tonight after Milei won the presidential runoff by a decisive margin, completing one of the most extraordinary political rises in modern Argentine history. Milei entered national politics only recently, built a movement around anger towards what he calls the political “caste”, and has now defeated the governing Peronist coalition while proposing to dollarise the economy, dramatically reduce public expenditure, privatise state enterprises and eventually abolish the central bank. In August, his rise demonstrated how repeated institutional failure can make radical alternatives appear less risky. In October, Massa’s first-round victory demonstrated that many voters still feared the uncertainty of Milei’s experiment. Tonight Argentina has made the comparison and chosen the experiment.
The economic circumstances explain why. Argentina enters this transition with annual inflation above 140%, severe currency instability, depleted foreign-exchange reserves, persistent fiscal problems and another IMF programme. These are not temporary difficulties produced by one unusually bad quarter. Argentines have experienced repeated inflation, debt defaults, currency crises and stabilisation programmes under governments of different ideological orientations. The status quo therefore lost one of the strongest political advantages any status quo normally possesses: the ability to describe itself as the safer option.
This is the central political meaning of Milei’s victory. Voters do not necessarily need to believe his programme is safe. They need to believe it offers a better expected outcome than continuing with institutions they already consider unsafe. When inflation exceeds 100%, savings repeatedly lose value and conventional governments cannot establish monetary credibility, warnings that radical reform could create instability become less persuasive because instability is already the baseline.
Massa faced an almost impossible version of the incumbency problem. He asked voters to trust him to solve an economic crisis while serving as economy minister during that crisis. He could argue that a presidency would give him greater authority and that Milei’s alternative threatened social protections, but every supermarket price increase reminded voters of the existing government’s record. Eventually enough Argentines concluded that the known costs of continuity exceeded the uncertain costs of disruption.
Milei therefore possesses a genuine electoral mandate for substantial change. A victory of roughly twelve percentage points cannot reasonably be dismissed as a narrow accident. Yet democratic mandates are often misunderstood. Winning an election gives a president authority to attempt a programme through constitutional institutions. It does not give the president authority to bypass those institutions whenever they refuse to implement the programme completely.
That distinction may determine whether Milei succeeds.
His political movement does not control Congress. Argentina’s Chamber of Deputies and Senate contain large blocs belonging to Peronism and the traditional centre-right opposition, while Milei’s own party possesses only a minority of seats. Provincial governors retain substantial power inside Argentina’s federal system. Courts can review executive action. Bureaucracies need to implement reforms. Trade unions can mobilise against policies affecting wages and employment.
The anti-establishment candidate has therefore won control of one institution inside the establishment he promised to transform.
This is not a contradiction in democracy. It is the constitutional architecture functioning as intended. Presidential elections answer who should control the executive. Legislative elections determine who writes laws. Federalism distributes authority geographically. Courts determine whether government remains within law.
Milei’s supporters may find those constraints frustrating if they believe Argentina’s situation requires emergency transformation. But institutional constraints matter most when political leaders believe their programme is urgent enough to justify overriding them.
Every president believes their objectives are important.
The constitution exists partly because urgency is not a neutral standard.
This creates Milei’s first major dilemma: the more radical the reform, the more coalition-building he will need from politicians he has spent years describing as the caste. Dollarisation, major privatisations and structural fiscal reforms cannot all be produced sustainably through presidential rhetoric. They require legislation, administrative implementation and cooperation from institutions containing people Milei publicly defines as representatives of the failed system.
Compromise therefore becomes unavoidable.
Yet compromise threatens the political identity that brought him to power.
Milei’s appeal comes partly from refusing the incremental bargaining associated with conventional Argentine politics. If he immediately moderates major proposals, supporters may conclude that the system absorbed another outsider. If he refuses compromise, Congress may block substantial parts of his programme.
This is the populist governing paradox. Outsiders win by arguing institutions are corrupted by bargaining. They then discover that democratic government is bargaining.
The difference between compromise and corruption therefore becomes crucial. Negotiating with another party to obtain votes is not inherently evidence of capture. Representative government requires actors with different mandates to exchange concessions.
The relevant question is whether bargaining occurs transparently around policy or through patronage designed principally to preserve political power.
Milei will need to learn that distinction quickly.
His relationship with the centre-right coalition associated with former president Mauricio Macri will be particularly important. Patricia Bullrich, who finished third in the first round, endorsed Milei before the runoff, helping consolidate anti-Peronist voters behind him. Milei may now need experienced politicians from that political space to staff government and pass legislation.
That creates another trade-off.
Experienced officials bring administrative competence.
They also look suspiciously like the political establishment Milei promised to remove.
Anti-establishment governments frequently discover that expertise itself is concentrated inside existing institutions. Running a finance ministry, central bank, energy regulator or diplomatic service requires technical knowledge accumulated over years. Replacing everyone associated with previous governments may satisfy demands for political rupture while destroying institutional memory.
State capacity is stored partly in people.
This is why political purges are economically expensive even when some personnel genuinely need replacement. Governments need enough turnover to implement a new mandate without removing so much expertise that institutions stop functioning.
Milei’s proposal to shrink the state makes this distinction particularly important. Argentina almost certainly needs substantial fiscal adjustment because persistent deficits cannot be financed indefinitely without consequences for inflation, borrowing or taxation. But reducing expenditure and reducing state capacity are not identical objectives.
An inefficient subsidy can be eliminated while government becomes more capable.
A tax authority can be cut until revenue collection deteriorates.
A ministry can contain unnecessary bureaucracy while also containing technical expertise required to implement reform.
A regulator can impose excessive rules while still performing functions markets require.
The objective should therefore be a state that spends more effectively, not simply one containing fewer employees or ministries.
This is where campaign imagery encounters public economics. Milei famously appeared with a chainsaw to symbolise expenditure cuts. The image works politically because it communicates rupture instantly.
Budgets cannot actually be cut with chainsaws.
They require line items.
Pensions.
Energy subsidies.
Public-sector salaries.
Transfers to provinces.
Universities.
Infrastructure.
Social programmes.
Every peso of expenditure has a recipient.
Fiscal consolidation therefore becomes distributional politics the moment government begins specifying what disappears.
Milei’s electoral mandate does not mean every voter supporting him agrees about which expenditure should be cut. Some voted primarily against Peronism. Some prioritised inflation. Some supported dollarisation. Others simply wanted political change.
Elections aggregate different motives into one number.
Presidents often interpret that number as agreement with their entire programme.
That can be dangerous.
The most important economic challenge will be establishing credibility quickly enough that households and markets believe stabilisation can succeed. Inflation contains an expectations component. If businesses expect prices to continue rising rapidly, they adjust prices and contracts accordingly. Workers demand higher wages. Households avoid holding pesos.
Changing those expectations can accelerate stabilisation.
But credibility cannot be produced by confidence alone.
People need to believe the fiscal arithmetic works.
Dollarisation is supposed to create credibility by removing the government’s ability to issue pesos. In principle, replacing the domestic currency with the dollar could impose a hard monetary constraint and reduce fears that future governments will finance deficits through money creation.
The implementation problem remains enormous.
Argentina needs sufficient dollar liquidity to convert monetary liabilities, while the appropriate conversion rate has major distributional consequences. Banks, contracts, wages and savings all need rules for transition. Fiscal deficits still need to be resolved because dollarisation does not create resources that government does not possess.
A government can run out of dollars just as it can run out of foreign currency under another fixed system.
Dollarisation therefore changes the constraint.
It does not abolish the budget constraint.
This is why fiscal stabilisation probably matters more fundamentally than the currency label itself. If government expenditure persistently exceeds sustainable revenue and financing, no monetary architecture can permanently eliminate the underlying imbalance.
Milei’s challenge is therefore to use institutional reform to make fiscal discipline credible without imposing such severe immediate costs that political support collapses before benefits arrive.
That is a sequencing problem.
Economic reforms produce costs and benefits on different timelines. Subsidy removal can raise household prices immediately. Lower inflation may take longer. Deregulation can eliminate existing jobs before new investment creates others.
People experience the transition before they experience the equilibrium.
Governments therefore need political capital to bridge the gap.
Milei currently possesses substantial capital because of the scale of his victory.
Political capital depreciates when reforms impose visible losses.
That creates an incentive to move quickly while support is high.
Moving too quickly can increase administrative mistakes and social resistance.
Again, there is no costless speed.
Argentina’s powerful trade unions will matter because Peronism is deeply embedded in organised labour. Large spending cuts or changes to labour regulation could generate strikes and demonstrations.
Milei may interpret those protests as the caste defending privileges.
Some undoubtedly will involve organised interests defending benefits.
That does not make collective opposition illegitimate.
Workers possess democratic rights to organise against policies affecting them just as presidents possess democratic authority to propose those policies.
The test is whether political conflict remains institutional.
Government cannot treat protest as illegitimate merely because it obstructs reform.
Protesters cannot treat electoral defeat as permission to overthrow government through disruption.
Democracy has to contain both mandate and resistance.
The Peronist opposition faces an equally important responsibility. Milei has won clearly. If opposition parties use their institutional power simply to make governing impossible because they expect economic failure to return them to office, Argentina could enter another destructive cycle.
Opposition should scrutinise radical reforms aggressively.
It should not confuse scrutiny with sabotage.
This is the loyal opposition principle: oppose the government while remaining loyal to the constitutional process that gave it authority.
Milei needs to apply the same principle when Congress blocks him.
A legislature refusing a presidential proposal is not automatically defying democracy. Legislators possess mandates too.
Argentina’s fragmented institutions therefore create something Milei’s campaign rhetoric sometimes underestimates: there is no single democratic will. Fifty-six percent can choose a president while different majorities choose governors and legislators. Democracy converts those overlapping mandates into bargaining rather than giving one election permanent supremacy over the others.
This may actually protect Milei from his own mistakes.
Presidents entering office during crises often believe speed requires concentrated power. Constraints appear inefficient.
But uncertainty surrounding radical reform is precisely when independent institutions possess the greatest value.
If Milei’s programme works, negotiation may slow implementation.
If parts of it fail, constraints can prevent mistakes from propagating through the entire system before correction becomes possible.
Redundancy matters in political institutions just as it matters in financial systems or infrastructure.
The danger is that Milei interprets institutional resistance as evidence that the establishment is attempting to overturn the popular mandate. His political language has frequently divided Argentina between productive citizens and a parasitic caste.
That rhetoric helped identify genuine frustration with political privilege.
It becomes more dangerous after victory because the president now controls the executive branch.
Anti-establishment rhetoric changes meaning when spoken by the establishment’s most powerful elected official.
Once in government, Milei cannot permanently campaign against “the state” as though he remains outside it.
He is about to become responsible for it.
That transition from outsider to office-holder is one of democracy’s most important transformations. Campaigns reward diagnosis. Governments require execution.
Milei has persuaded millions of Argentines that the existing economic model failed.
That was the electoral task.
He now needs to demonstrate that his alternative can function institutionally.
That is much harder.
Success would have significance beyond Argentina. Economists and politicians across Latin America would study whether aggressive fiscal adjustment, deregulation and monetary reform can break a long cycle of inflation and stagnation.
Failure would also travel internationally because opponents of radical market reform would use Argentina as evidence against similar programmes elsewhere.
Argentina therefore risks becoming an ideological laboratory.
Its citizens are not experimental subjects.
Policies should be judged according to Argentine outcomes rather than whether they validate libertarian or Peronist theories abroad.
Inflation.
Real wages.
Poverty.
Investment.
Employment.
Productivity.
Fiscal balance.
Those outcomes matter more than whether one ideological camp can declare victory.
The election itself already provides one clear lesson. Political establishments cannot rely indefinitely on voters fearing alternatives more than they dislike existing failure.
Argentina reached the point where enough citizens decided disruption was worth the risk.
That is an extraordinary indictment of the previous economic equilibrium.
It is not yet evidence that the alternative will work.
Winning the election gives Milei the opportunity to test his argument.
It does not prove the argument.
The distinction matters because democratic mandates provide authority, not economic truth.
Fifty-six percent of voters can determine who governs.
They cannot vote inflation away.
Economic constraints remain after elections.
Budgets still have to balance eventually.
Investors still respond to expected returns.
Households still respond to prices.
Institutions still require people capable of operating them.
Congress still has votes.
The peso still has holders.
The IMF still has claims.
Argentina therefore wakes tomorrow with a radically different political expectation and almost exactly the same economic constraints it had yesterday.
Changing those constraints will require something less dramatic than the campaign and more difficult than winning it: implementation.
In August, Milei demonstrated that repeated institutional failure could make radicalism politically plausible. In October, Argentina hesitated when confronted with the risks of that radicalism.
Tonight, it chose the risk.
Now the comparison changes.
Milei is no longer competing against the failures of the establishment.
He will soon own the consequences of the alternative.
The chainsaw won the election.
Governing requires a scalpel.
