A run-off looks inevitable for the Costa Rican presidential election as no clear winner has yet emerged after 88 per cent of votes have been counted so far.
According to figures released on Monday by the electoral authority, former president Jose Maria Figueres had a clear lead and was followed by former finance minister Rodrigo Chaves.
However, at least 40 per cent of the vote is required to avoid a run-off in April.
Figueres, the head of the centrist National Liberation Party (PLN), so far has around 27.3 per cent of the vote, while Chaves, of the centre PSD party, has about 16.7 per cent.
Fabricio Alvarado, an evangelical preacher from the right-wing Nueva Republica party, is in third place with around 14.8 per cent.
Some 60 per cent of those eligible turned out to vote.
More than 20 candidates stood in the polls to elect a new president to succeed Carlos Alvarado, a social democrat who has been in office for almost four years.
As the Costa Rican constitution forbids re-election for the presidency, Carlos Alvarado could not run again. His PAC party, which has ruled for nearly eight years, trailed in the Sunday vote with candidate Welmer Ramos, the former economy minister, netting less than one per cent.
All 57 members of single-chamber parliament are also being elected. The PLN was leading in this vote too, with projections showing it would net 19 seats, while the PAC would get none.
Days before the elections, a Universidad de Costa Rica poll found around 32 per cent of respondents were undecided as to how they planned to vote.
A popular tourist destination, Costa Rica has about five million inhabitants and is known for its biodiversity and nature conservation efforts.
Australian Associated Press
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