Keiko Fujimori was sworn in as Peru’s president on Tuesday after winning the June presidential run-off by a margin of fewer than 50,000 votes, a victory that confirmed a regional shift in South America towards the conservative wing. With the ceremony, Fujimori, a four-time presidential candidate and leader of Peru’s largest political party, takes office as the country’s ninth president in a decade. The 51-year-old was hoping to stabilise Peru’s turbulent politics, reduce crime and boost economic growth. Over the past decade, only three of Peru’s presidents have been elected by popular vote. Fujimori centred her campaign around promises to improve security in a nation where extortion rackets have become a significant problem.