In Colombian Vote, a Question Looms Large: Is the Frontrunner a Puppet?

Many believe former President Álvaro Uribe is pulling the strings of his protege, Iván Duque, who dismisses the allegation

BOGOTA, Colombia—Ahead of Sunday’s presidential election, a cartoonist portrayed frontrunner Iván Duque as a naïve child asking his dad what he’d like for Father’s Day.

“A new presidential chair,” answered the father, depicted as Mr. Duque’s powerful mentor, former President Álvaro Uribe.

As Colombians prepare to vote on Sunday, Father’s...