Guatemala's presidential candidate for the Semilla party, Bernardo Arevalo, shows his inked finger after casting his vote at a polling station in Guatemala City during the Guatemalan presidential runoff election on Aug 20, 2023. (PHOTO / AFP)

GUATEMALA CITY - Guatemalan anti-corruption crusader Bernardo Arevalo was voted in as president on Sunday, preliminary results showed, a victory that until recently seemed impossible and which many voters hope will end years of rule dogged by allegations of graft and authoritarianism.

Arevalo, a 64-year-old ex-diplomat and son of a former president, had a 58 percent to 37 percent lead over former first lady Sandra Torres with 99 percent of votes counted.

His victory comes as violence and food insecurity roil the country, triggering fresh waves of migration. Guatemalans now represent the largest number of Central Americans seeking to enter the United States.

Bernardo Arevalo has vowed to "purge institutions co-opted by the corrupt" and to get people committed to what he calls the fight for justice to return to Guatemala after scores of prosecutors, judges and journalists fled the country

Arevalo has vowed to "purge institutions co-opted by the corrupt" and to get people committed to what he calls the fight for justice to return to Guatemala after scores of prosecutors, judges and journalists fled the country.

He faces blowback from entrenched interests and a Congress which his party does not control.

President Alejandro Giammattei congratulated Arevalo on X, the social media platform formerly known as Twitter, and invited him to start an "ordered transition" once results were formalized. The new president takes over Jan 14.

Outside the Las Americas hotel in the capital, where Arevalo was due to speak, supporters gathered to revel in his victory, blaring horns, waving Guatemalan flags and cheering.

Many Guatemalans said they hoped Arevalo's win will herald a better future.

"We have waited for this moment for many years," said Carlos de Leon Samayoa, 27, as he celebrated on the streets of Guatemala City. "I feel pretty emotional."

Torres canceled her post-vote press conference scheduled for Sunday evening, local media reported.

Arevalo unexpectedly emerged out of political obscurity to build a large anti-graft movement with his Semilla party, after many other opposition candidates were barred from running.

His victory marks a repudiation of Guatemala's established political parties that wield huge influence.

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When Arevalo landed a surprise second-place finish in June's first-round of voting, official results were delayed as opponents alleged irregularities and his party was then briefly suspended at the request of a prominent prosecutor before Guatemala's top court reversed the ban.

Risa Grais-Targow, analyst at political risk consultancy firm Eurasia Group, said she expected attacks on Arevalo to continue.

"The ruling pact will likely continue to target electoral officials and Arevalo’s Semilla party with investigations ahead of January’s change in government," she said.

Political tensions

There were no reports of violence or disorderliness as polls closed.

A key representative of the Organization of American States, which has a team of 86 election observers in Guatemala, said the voting had gone smoothly. Eladio Loizaga, head of the mission, said the election had "fulfilled all the demanding obligations."

The election is being closely watched by the international community, including the United States, after campaigning was marred by attempts by some officials to remove Arevalo and his Semilla party from the race.

READ MORE: Guatemala court sentences ex-President Perez, ex-VP in graft case

Outgoing conservative President Alejandro Giammattei has vowed to ensure an orderly vote and transition of power.