A new poll shows Peru's presidential race tightening three weeks ahead of voting.
The Ipsos-Apoyo survey shows ex-President Alejandro Toledo falling to 23 percent among respondents.
Keiko Fujimori is in second place with 19 percent. Leftist former army officer Ollanta Humala has climbed to 17 percent, putting him third.
If no candidate wins a majority, a runoff will be held in June.
Former Lima Mayor Luis Castaneda has dropped into a fourth-place tie with a surging Pedro Pablo Kuczynski, a member of the Cabinet during Toledo's 2001-2006 term. Each polled at 14 percent.
The face-to-face survey of 2,000 people in 24 regions has a margin of error of plus or minus 2.2 percentage points. It was published Sunday by El Comercio.