"the duck" was a way of referring to Lech Kaczyński.
One may assume there are two ducks in Polish politics: one is Donald Duck, the other is Kaczyński Duck (kaczka=duck)
If there was only one round neither one of us would probably dare to do that.
I would probably abstain. Now look how Duda has suddenly become kind to everyone. His gay patrols gone, he just thanks people for voting for him, but also for voting for his competitors. Smiles and kind greetings for those who want to listen, supporters or enemies alike. As my neighbour uded to say: :"Cukierek umaczany w truciźnie".