Data from Peru's ONPE electoral authority reveals that Fujimori, a four-time presidential hopeful, has secured 50.11 percent of the votes.

She currently leads leftist candidate Roberto Sanchez by 43,386 votes, with only 40,213 potential ballots left to be counted.

The electoral authority has not yet officially declared a winner and expects to do so in mid-July.

The razor-thin election results were initially delayed by a detailed review of contested ballots, the late arrival of overseas votes, and the narrow margin between the two candidates.

The outcome has already sparked political tension.

Earlier on Tuesday, Sanchez claimed that "fraud was underway", though he provided no evidence to support the statement, according to media reports.

He declared that he would refuse to recognize the final results, raising fears of a prolonged political crisis.

Sanchez had previously requested the canceling of thousands of votes cast abroad, which largely favored Fujimori. However, Peru's national electoral rejected his request late Tuesday night.

Fujimori's victory deepens a broader rightward shift across Latin America. It follows the election of political outsider Abelardo De La Espriella in Colombia on Sunday, as voters across the region turn to hardline candidates amid escalating fears over public safety.

The incoming president will inherit a deeply fractured nation that has cycled through eight presidents in the last eight years. Peru continues to face severe economic inequalities between the capital city of Lima and its rural provinces, alongside widespread voter discouragement.

Peru's political landscape has been notoriously volatile. None of the previous eight presidents completed a full term in office; three faced impeachment, one resigned after just six days, and four are currently behind bars.

Fujimori is the daughter of former President Alberto Fujimori, who served 16 years in prison for human rights abuses committed during his decade-long rule in the 1990s.

While she previously distanced herself from her family's political past, Fujimori leaned heavily into her father's legacy during this campaign. She successfully cast herself as a strong leader capable of restoring order and stability as voters confront rising rates of extortion and murder.