Ecuador leftist ahead with 91 percent of votes counted - electoral council

QUITO (Reuters) - Ecuador's leftist candidate Lenin Moreno was ahead in the presidential election with 51.05 percent of votes versus 48.95 percent for his right-wing challenger Guillermo Lasso, according to the electoral council website with 91.08 percent of ballots counted on Sunday night. Both candidates had previously proclaimed themselves winners based on two separate exit polls, setting the stage for possible protests in the historically volatile Andean nation. (Reporting by Alexandra Ulmer and Alexandra Valencia; Editing by Mary Milliken)