Warsaw mayor Rafal Trzaskowski, the Oxford-educated son of a jazz musician and frontrunner in Sunday's Polish presidential election, made friends across the European Parliament when he worked there, including with Portugal's now-foreign minister.

The two main contenders for Poland’s presidential election on Sunday locked horns over Europe and traded personal barbs this week as they each made final bids for the support of floating voters. The winner will take over from current President Andrzej Duda,

Poland’s presidential election will determine whether the country can restore the rule of law and remain a reliable partner in the European Union after nearly a decade of divisive right-wing populist rule.