Poles are going to the polls to choose its new president in a run-off vote. In the first round on 10 May, neither Conservative challenger Andrzej Duda nor incumbent Bronislaw Komorowski gained the 50% needed to win outright.
Mr Duda edged Mr Komorowski, who had been the favourite and is looking for a second term, by 34.7% to 33.7%.
The president has limited powers, but is head of the armed forces and can veto new laws.