Bolivian President Evo Morales has been elected to a third term with more than 60% of the vote, avoiding a runoff against a divided opposition, exit polls said.
Mr Morales, who took office in 2006 as the country's first indigenous president, finished nearly 40 points ahead of his nearest rival across the country, pollsters Ipsos and Equipos Mori found.
They found the runner-up was wealthy cement magnate Samuel Doria Medina with around 20% of the vote.
Mr Morales's Movement Toward Socialism (MAS) is also expected to win a strong majority in Congress to continue implementing leftist reforms in one of Latin America's poorest countries.
Mr Morales is set to extend his time in office to 14 years, until January 2020.
Bolivia's Supreme Court ruled last year that his first term was exempt from a new constitution adopted in 2009 that imposed a limit of one re-election for sitting presidents.
Mr Morales, who rose to prominence as a union leader fighting for the rights of the country's cocoa growers, has brought sweeping changes since taking office in 2006.
His government has nationalised the oil and gas sectors, and expanded welfare programmes.
The economy grew 6.8% last year and is forecast to grow more than 5% this year, one of the fastest rates in Latin America.
