The result of Sunday's presidential runoff leaves Tusk politically weakened and there are questions about whether his multi-party coalition can survive to the end of its term in late 2027.

Poland's Prime Minister Donald Tusk has said he would ask parliament to hold a vote of confidence in his coalition government after his ally, the liberal Warsaw mayor Rafał Trzaskowski, lost Sunday's presidential runoff.

Conservative Karol Nawrocki won the election, finishing with 50.89% of the vote.

"Regardless of how we evaluate the winning candidate, we should acknowledge his victory and congratulate his voters," Tusk said in a televised speech on Monday.

"I want to declare to you that I will not stop for a moment as prime minister of our government. The presidential elections have not changed anything here and will not change anything. We will cooperate with the new president where necessary and possible."