With a surname that sparks fury among some Peruvians and inspires adoration among others, center-right presidential contender Keiko Fujimori has managed to stay atop a turbulent field of candidates ahead of Sunday's election.

The daughter of former President Alberto Fujimori has been able to attract the unwavering support of about a third of Peruvians the past two years, thanks in part to his public investments in rural areas and crackdown on leftist insurgents in the 1990s.

But with polls showing Fujimori short of the simple majority needed to win outright, the chance at tapping a well of hostility to Fujimori in a run-off has fueled a hotly-disputed contest for runner-up.