A vote seen as a test of the power of populist nationalism in Europe was too close to call, with exit polls putting the two contenders neck and neck.

Karol Nawrocki narrowly defeated his liberal opponent in Poland's runoff election on Sunday to determine Andrzej Duda's successor.

P OLAND’S PRESIDENTIAL election, which pits a centrist liberal against a hard-right nationalist, has been watched closely all across Europe. A liberal win would cement Poland’s newfound influence in the European Union’s mainstream;