The most recent opinion poll in Peru indicates that nationalist candidate Ollanta Humala is now in first place in the race for president.
The Apoyo polling company survey, which polled 2,000 citizens nationwide, says the former army officer leads pro-business former congresswoman Lourdes Flores, 32 to 28 percent.
If Flores is elected, she would be Peru's first woman president. She is viewed by international investors as the best choice for the economy.
Humala proposes higher corporate taxes and is campaigning to restrict foreign investment in Peru. He is backed by Bolivian President Evo Morales and Venezuelan President Hugo Chavez - both left-leaning leaders.
His popularity has concerned Washington because he opposes the eradication of Peru's coca crop, the raw material for cocaine.
Peru's elections will take place in next month.Some information for this report was provided by AP and Bloomberg.