(Bloomberg) -- Leftist Peruvian presidential candidate Pedro Castillo maintained a shrinking but commanding lead over Keiko Fujimori ahead of the June 6 election, according to a poll released Friday by Datum.
The survey, taken April 27-29, shows Castillo with 44% of voter preference versus 34% for former lawmaker Fujimori. A full 11% of voters remain undecided, and 11% plan to cast blank or invalidated ballots.
Castillo's lead over Fujimori narrowed by five points since the last Datum survey conducted April 16-20.
Read more: Peru Presidential Favorite Distances Himself From Marxist Allies
In a sign of how polarized the race is, 49% of those who planned to vote for Castillo said they were doing so because they “reject” Fujimori. Likewise, 59% of those voting for Fujimori said they were doing so because of their dislike of Castillo.
In addition, 49% of respondents said they believed Fujimori -- the daughter of jailed former President Alberto Fujimori -- would be an “authoritarian” leader. Some 42% said they thought Castillo would create a leftist government “like Venezuela.”
The poll tracks with other surveys that show Castillo with a significant lead.
The Datum survey of 1,205 people had a margin of error of +/-2.8%
On Thursday, Castillo was forced to suspend a campaign rally in Lima after he said he was diagnosed with a throat infection. His campaign has said he'll resume activities Friday and meet Fujimori for a debate Saturday.
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