Left-winger claims Ecuador presidential poll win, but rival alleges 'fraud'

Leftist candidate Lenin Moreno appeared on the verge of victory in Ecuador's presidential election but his opposition rival refused to recognise the results, calling on his supporters to take to the streets to guard against "fraud".

Sunday's second-round run-off in the Andean nation of 16 million was being watched closely as a barometer of whether the left, which had dominated South American politics for the past 15 years, could stop a string of right-wing victories across the region.