Poland's incumbent President Andrzej Duda holds a slim lead in the country's presidential election, according to an exit poll.
The poll on Sunday showed Mr Duda, an ally of the conservative government, with 50.4% of the vote.
He was pitted against the socially liberal Warsaw mayor Rafal Trzaskowski.
The vote has been widely seen as a battle for the country's future as well as its strained relations with the European Union.
Mr Trzaskowski got 49.6%, according to the exit poll, which pollster Ipsos said had a margin of error of two percentage points. Official results are expected on Monday.
"I want to thank everyone that voted for me," Mr Duda told supporters shortly after the exit poll was announced.
Mr Duda topped the first round of voting last month with a convincing lead but fell short of the 50% needed to win outright.
The election had been due to take place in May, when Mr Duda was higher in the polls and stood a better chance of winning in the first round.
Although the coronavirus pandemic had not yet peaked, the government was desperate for the May vote to go ahead. It eventually backed down when a junior coalition partner joined the opposition in saying the governing nationalist Law and Justice (PiS) party were putting politics before public health.