It follows a first round on May 18, in which Warsaw Mayor, Rafał Trzaskowski, won more than 31% of the vote and Karol Nawrocki, a conservative historian, earned nearly 30%. The winner will succeed President Andrzej Duda, a conservative who is finishing his second and final term. Final results are expected on Monday. (AP video by Rafal Niedzielski)

Poles begin voting for new president in pivotal runoff election, AP explains

It follows a first round on May 18, in which Warsaw Mayor, Rafał Trzaskowski, won more than 31% of the vote and Karol Nawrocki, a conservative historian, earned nearly 30%. The winner will succeed President Andrzej Duda, a conservative who is finishing his second and final term. Final results are expected on Monday. (AP video by Rafal Niedzielski)