A recent opinion poll by local firm CPI shows presidential candidate Ollanta Humala maintaining his lead over competitor Keiko Fujimori, although with a smaller margin than another poll released earlier this week.
According to the most recent poll, which was published by daily Correo, Humala has 40.6 percent support, 3.8 percent higher than Fujimori who is sitting with 36.8 percent.
Almost 12 percent of the electorate say they will spoil their vote, while 10.7 percent have said they have yet to decide who to support.
In Lima, Fujimori, who will be 36 in May, has an advantage over Humala with 40.2 percent support, compared to 35.6 percent for the 48-year-old left-wing nationalist. In the rest of Peru, Humala has a strong lead over the right-wing congresswoman with 45 percent support versus 33.8 percent.
The poll of 1,800 people was taken April 20-24 and has a level of confidence of 95.5 percent with a margin of error of 0.5 percent, according to CPI.
Another poll, which was released on Sunday by firm Ipsos Apoyo, gave Humala 42 percent compared to 36 percent for Fujimori, the daughter of imprisoned ex-President Alberto Fujimori.
A poll by Datum narrows the gap between both to barely 41.5% for Humala and 40.3% for Fujimori.
The second round vote is scheduled for June 5 and the new president will take office on July 28.
