Paulo Vilca

The provided news articles focus on the tight presidential race in Peru between left-wing congressman Roberto Sanchez and right-wing candidate Keiko Fujimori. The election highlights the country's deep political polarization and a decade of political instability, where Congress has gained significant power over the presidency. Neither article mentions or provides any information about an individual named Paulo Vilca. Therefore, based solely on the given text, it is not possible to provide a summary or context for Paulo Vilca's relevance or background.