QUITO, Ecuador—Ecuador will be led for the next four years by a conservative businessman after voters rebuffed a left-leaning movement started by former President Rafael Correa more than a decade ago. That election certainty, however, did not extend to neighboring Peru, where the presidential contest is headed to a runoff after none of the 18 candidates obtained more than 50 percent of the votes. The South American nations held elections Sunday under strict public health measures amid a surging coronavirus pandemic that has brought on new lockdowns and exacerbated a general sense of fatigue. Peru, which also elected a new Congress, reported its highest single-day COVID-19 death count just as voters headed to the polls. The victory of former banker Guillermo Lasso in Ecuador came after less than half of a percentage point put him ahead of another candidate and allowed him to claim a spot in Sunday’s runoff. The …