Iván Cepeda conceded Colombia’s presidential election to right-wing businessman Abelardo de la Espriella, three days after voters cast a record number of ballots. Preliminary figures showed de la Espriella ahead by 0.96 percentage points, the narrowest victory for a Colombian presidential candidate in recent history.

Cepeda had initially said he would wait for the legally binding final count, which remained under way. He then announced that he had decided to accept the result, describing the concession as an act of democratic responsibility intended to support peaceful coexistence and political dialogue.

The defeated candidate criticised US President Donald Trump’s involvement in the campaign. Trump endorsed de la Espriella after the first round and called Cepeda a radical left Marxist. After the runoff, Trump said the winner had prevailed easily, despite the margin being below one percentage point. Cepeda characterised those interventions as improper foreign involvement in Colombia’s domestic affairs.

As the runner-up, Cepeda was entitled to take a seat in the Senate. He said he would use that position to pursue opposition that was democratic, watchful and constructive. His decision ended uncertainty over whether he would continue contesting the preliminary outcome while the official tabulation proceeded.

De la Espriella, who had used harsh language about the left during the campaign, adopted a more conciliatory tone in his victory address. He said Colombians who disagreed with him had nothing to fear. The statement marked a change in emphasis as he prepared to move from campaigning to forming a government.

The president-elect also moved quickly to strengthen relations with the Trump administration, contrasting with repeated clashes between Washington and outgoing President Gustavo Petro. De la Espriella said he would accept an invitation for Colombia to join the Shield of the Americas, a US-led group of Western Hemisphere countries intended to combat cartels and drug trafficking.

He was scheduled to be sworn in on 7 August. Until completion of the legally binding count, the published account distinguished the preliminary margin from final certification, but Cepeda’s acceptance removed the principal political challenge from his opponent. The concession did not erase the country’s polarisation or Cepeda’s concerns about Trump’s role; it redirected those disputes into the legislature and the incoming administration. No reported information indicated that the narrow margin itself was invalid.

Cepeda’s Senate entitlement ensured that the losing campaign retained an institutional role after the presidential transition. His stated approach combined scrutiny with cooperation where possible, while de la Espriella’s reassurance sought to moderate earlier campaign rhetoric. Both moves addressed tensions created by a margin of less than one percentage point.