Peruvian poll shows Humala with tiny lead

Left-wing Ollanta Humala has edged ahead of right-wing lawmaker Keiko Fujimori heading into Sunday's presidential run-off, a poll by Datum showed, though the race is still technically tied, a source familiar with the data said.

The former army officer had 50.8 percent of the vote, while the daughter of jailed former President Alberto Fujimori had 49.2 percent. The survey polled 5,015 people nationwide, with a margin of error of 1.4 percentage points. 

A separate poll by Datum published on Friday had given Fujimori a slight edge.

Polls by other survey firms this week have shown a technical tie between the candidates.