"History may repeat itself if they win. There may be a repeat of martial law and the drug killings that happened under their parents," human rights worker Myles Sanchez told AP news agency regarding a Marcos Jr./Duterte-Caprio victory.
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Robredo, 57, is a former human rights lawyer and staunch liberal and has pledged to improve education and welfare, fight poverty and improve market competition if elected. She had narrowly defeated Marcos in the run for the vice presidency in 2016.
She has criticized Duterte's war on drugs, and condemned the "senseless killings."
A win for Robredo would make her the third woman to lead the Philippines after democracy champion Corazon Aquino in 1986 and Gloria Macapagal-Arroyo in 2001.
She is running with Francis Pangilinan, a lawyer, and senator, and the latest survey put her in second place, with 23 percent support.
Source: AFP, AP, Reuters
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