Colombia president leads candidates but protest vote high - poll

Colombia's President Juan Manuel Santos speaks during a session at the annual meeting of the World Economic Forum (WEF) in Davos January 23, 2014. REUTERS/Ruben Sprich

BOGOTA (Reuters) - Colombian President Juan Manuel Santos would win more support than any other candidate in the first round vote for president, but the share of the electorate who will not pick any candidate on the ballot remains the biggest block of voters.

A poll by Ipsos Napoleon Franco showed that Santos would garner 25 percent of the vote against rival candidates on May 25, while those who would mark the ballot in support of no candidate would be 27 percent. Another 23 percent are undecided, the survey, published on Monday on RCN Radio's website, said.