Not Trzaskowski and not Nawrocki. specified a vote besides counts

They could have not gone at all. On that sunny Sunday, June 1, they could have left this run-down city with their children. They were certain that they didn't want Nawrocki. Ola, who voted for Biejat in the first round, decided to vote for Trzaskowski. Radek, a voter for Zandberg, decided to cast an invalid vote. Why?