Mr Duda's support has slipped considerably since then, partly because of the virus fallout, which is pushing Poland into its first recession since communist rule.Polls opened at 5am GMT and will close at 7pm GMT, with an exit poll scheduled shortly after that and the first official results only expected Monday morning.
But Mr Trzaskowski will be hoping to sweep up votes from Poles who supported other opposition candidates. "The upcoming elections are a clash of two visions of Poland, the white-red and rainbow-coloured," Justice Minister Zbigniew Ziobro told the Polish news agency PAP on the last day of the campaign - a reference to the colours of Poland's national flag and the symbol most widely used by the LGBT community.