Guatemala's President-elect Jimmy Morales gestures to supporters after winning the presidential elections in Guatemala City, on Monday.

AFP/Guatemala City

Comedian Jimmy Morales won a landslide victory in Guatemala's presidential race on Sunday despite having no political experience, after a campaign upended by a corruption scandal that felled the outgoing president.

Morales, a comic actor and TV personality, declared victory as election officials released the resounding results: 69% of the vote for the conservative candidate to 31% for former first lady Sandra Torres, with 96% of polling stations reporting.

"With this election you have made me president, I received a mandate and that mandate is to fight the corruption that has consumed us," said Morales on national TV.

"Thank you for this vote of confidence. My commitment remains to God and the Guatemalan people, and I will work with all my heart and strength not to defraud you."

Torres conceded defeat in a brief televised address, telling Guatemalans that "the people have made their choice and we respect it. We wish Mr Morales the best of success."

It has been a remarkable ride for Morales, who started the race with just 0.5% support back in April.

The campaign was rocked by president Otto Perez's resignation and arrest on corruption charges on September 3, three days before the first-round vote.

Corrupt network

Perez, who is in jail awaiting trial, is accused of masterminding a corrupt network of politicians and customs officials that took bribes from businesses in exchange for illegal discounts on import duties.

Prosecutors and UN investigators say the network collected $3.8mn in bribes between May 2014 and April 2015 - including $800,000 each to Perez and jailed ex-vice president Roxana Baldetti.

Morales rode a wave of outrage with politics-as-usual in the impoverished Central American country, which is torn by gang violence and still recovering from a 36-year civil war that ended in 1996.

He won the first-round vote with 24% to 20% for Torres, who was running for social democratic party UNE.

Morales, 46, is famous for playing a country bumpkin cowboy who nearly becomes president in the 2007 film A President in a Sombrero.

In real life, the presidential race was his first foray into national politics, though he once ran unsuccessfully for mayor of his hometown.

Morales will be tasked with rebuilding confidence in the government at a time of deep public distrust, shaky institutions and a depleted treasury.

Morales was all smiles and charisma on the campaign trail, with few concrete policy pledges.

After surging in the polls, he hastily drafted formal policy proposals - which he had not done until then. He adopted the campaign slogan, "Not corrupt, not a thief."

Until inauguration day on January 14, the country is in the hands of caretaker president Alejandro Maldonado, a former Constitutional Court judge.