Explainer: Peasant roots to president? Peru's Castillo, the champion of the poor

FILE PHOTO: Supporters rally for Peru's socialist presidential candidate Pedro Castillo, who will face right-wing candidate Keiko Fujimori in a run-off election on June 6, on the final day of campaign events in Lima, Peru June 3, 2021. REUTERS/Liz Tasa

LIMA (Reuters) - Peru's Pedro Castillo has come a long way to be on the cusp of winning the Andean nation's presidential election.

The son of peasant farmers, who lives humbly as a teacher in Peru's north and tends animals on his land, is the narrow favorite ahead of Sunday's run-off vote that has become a referendum on wealth and poverty in the copper-rich country.