Bolivian presidential candidate Evo Morales retains a slight lead over his nearest opponent in polls leading up to Sunday's vote, which he has said could turn out to be fraudulent.
The Ipsos-Captura poll results released Wednesday give Mr. Morales about 34 percent of the vote, followed by former president Jorge Quiroga with 29 percent. Trailing in third place was businessman Samuel Doria Medina with nearly nine percent. The remainder of the voters in the survey of nearly 5,000 people were undecided.
Tuesday, Mr. Morales's legal advisor said a review of voter rolls showed some people were registered two or three times. The national electoral court says it will investigate if a formal complaint is filed.
If Mr. Morales is elected, he would be the first Bolivian president of indigenous heritage.
Some information for this report provided by AFP, AP and Reuters.