Morales said he is waiting to hear the results of Sunday's vote from rural areas, which is thought to be a stronghold for the country's first indigenous president.
"They don't like us much in the city, but the first results give me hope," he said.
His third term is set to end in 2020, but if the referendum finishes in his favor, he would be able to run for re-election, and potentially take his presidency to 2025.
Cuatro for Evo? Bolivians vote on fourth term for President Morales https://t.co/XWEm1POPNB pic.twitter.com/CU6SUt6Yb1
โ RT (@RT_com) February 22, 2016
Morales has said he would respect the final result, but complained of dirty tactics employed by a so-called journalist who is accused of having connections to the US government.
"We are going to respect the results, whether it be a 'No' or a 'Yes'. We always have respected them. That is democracy," he said at a press conference on Monday.
Life will go on if he loses the referendum, Morales has said. The 56-year-old would like to be a sports trainer after his political career.
Comment: Uncle Sam is his name and dirty tricks is his game. The US government has just got to meddle in the affairs of every sovereign country on the planet.