EU and OAS Election Monitors Reject Petro’s Fraud Claims as Colombia Heads to June 21 Runoff

International observers certify Colombia’s first-round vote as transparent and credible

Two major international electoral observation missions have rejected claims of fraud in Colombia’s May 31 presidential first round, as outgoing President Gustavo Petro continued to press unsubstantiated allegations of irregularities in the days following the vote. The country heads to a June 21 runoff between right-wing candidate Abelardo de la Espriella and leftist senator Iván Cepeda.

The European Union Election Observation Mission (EU EOM) issued a preliminary statement Tuesday, June 2, describing the vote count as having been carried out in a “transparent, orderly and fluid” manner. Esteban González Pons, Vice President of the European Parliament and chief observer of the EU mission, told reporters in Bogotá that none of the 12 candidates who competed in the first round had brought claims of irregularities to his mission.

“We can discard any manipulation of data in the quick count and in the final count,” González Pons said. The mission selected a random sample of tally sheets from around the country and compared them to physical ballots cast, finding no inconsistencies.

“We can discard any manipulation of data in the quick count and in the final count.” — Esteban González Pons, Chief Observer, EU Election Observation Mission to Colombia

The EU EOM deployed 143 observers from 24 EU member states plus Norway, Switzerland, and Canada, covering 591 voting tables. The mission will also observe the June 21 runoff and issue a final report two months after the process concludes.

The Organization of American States (OAS) mission, headed by former Dominican Republic President Leonel Fernández, similarly described the May 31 election day as “civic, calm and participatory,” with high citizen turnout compared to previous electoral cycles. The OAS mission comprised 96 observers and specialists from 24 countries, covering 412 polling stations and 1,340 voting tables across 26 departments, the Capital District, and five cities abroad.

Official results from the National Civil Registry (Registraduría Nacional del Estado Civil) showed de la Espriella receiving 43.74% of the vote, a margin of more than 673,000 votes over Cepeda, who received 40.90%. More than 23 million voters participated. By Monday night, the Registry said it had completed its review of 99.98% of voting tables and found a variation of only 0.06% from the quick count issued on election night.

Presento las bases comprobadas del posible fraude. Que puedo entregar a autoridad competente.

Dije que no reconocí los datos del preconteo del software de los hermanos Bautista es porque tengo datos.

Mi compromiso con mi pueblo y el amor a mi país por el que he luchado toda mi…

— Gustavo Petro (@petrogustavo) June 2, 2026

Petro, who is constitutionally barred from seeking re-election, alleged on Sunday that 800,000 voters had been illegally added to voter rolls. He doubled down Tuesday in a post on X, claiming without evidence that 885,000 voters had been registered after a March 31 deadline, and pointing to alleged irregularities in the software used for vote counting and tabulation. The president said he could present his evidence to the relevant authorities.

Iván Cepeda (from Twitter)

Cepeda, who represents Petro’s Pacto Histórico, initially declined to acknowledge the quick count results on Sunday, saying he would wait for the official tally overseen by judges and notaries. By Monday, however, he softened his position, stating that monitors deployed by his party had not found “irregularities of a sufficient dimension to speak of fraud.” Cepeda also challenged de la Espriella to a debate ahead of the runoff.

Under Colombian law, election results are certified by judges, not the executive branch, typically within two weeks of the vote. González Pons noted that Colombia “has very strong democratic institutions, rooted in the people,” adding that the country “will find in democracy its principal ally, because of all the things that fail Colombia, democracy is one that has never failed it.”

Political analysts and observers have cautioned that Petro’s fraud allegations, made without supporting evidence, risk inflaming political tensions and contributing to a polarized climate in the lead-up to the June 21 runoff.