Nationalist Karol Nawrocki's victory in the Polish presidential election may be thin, but it marks a huge turmoil in the country's political landscape, with its impact not only in Warsaw, but throughout the EU.

With the support of the previous Ruling Conservative Law and Justice (PIS) Party and in the public event of Donald Trump's magazine movement, radical right-wing historian Nawrocki defeated his free rival, capital mayor Rafałtrzaskowski, defeating 50.89% to 49.11%.

His victory means PIS retained 11-size boots at the doorstep of Polish politics, which could seriously undermine the stability of center-right Prime Minister Donald Tusk and threaten the country's new discovery at the top of Europe.

Tusk ended eight years of PIS rule in the 2023 elections and said Poland returned to Europe. Over the past two years, the group's sixth-largest economy has been at the heart of mainstream European decision-making.

Nawrocki's victory gave him the president's veto, which would make it difficult for the Tusk government to revoke justice and other changes implemented by other PIS through pledged legislation, leading to repeated conflicts with Brussels.

But it is not just a period of cohabitation between a pro-EU prime minister and a nationalist, Eurosceptic president. The 42-year-old has never held an elected position and will be as active as possible to destroy the ivory.

Poland's unanimous president, Andrzej Duda, deployed his veto, but very few. Analysts say Nawrocki will weaken the prime minister before the 2027 parliamentary elections.

PIS and its allies will paint a full rejection of Tusk's progressive and reformist agenda in Sunday's presidential vote -- and may even be attempted to try to lower his already broken coalition government before the end of his term.

For example, quick elections could be triggered, for example, if Nawrocki's campaign focused on conservative Catholic values, attacks on EU immigration and climate policy and opposition to Ukraine's joining the group, he decided to suspend the budget, which he could use to send to Piss's statistics Constitution Torinar.

Polls show that PIS and the far-right, liberal federal party Sławomir Mentzen won nearly 15% of the vote in the first round of the presidential vote, and if they are united, they can control most of the seats in parliament.

So far, Mentzen ruled this out and even refused to endorse Nawrocki. But an analysis of Sunday's vote showed that almost 90% of Mentzen's first-round voters supported Nawrocki in presidential runoff, with potential affinity obvious.

In Europe, while Tusk will continue to represent Poland at the EU summit, he will inevitably be weakened by challenging the legitimacy of his domesticity. Nawrocki, as commander-in-chief, may also seek to swing Poland's strong Ukrainian stance.

He has not shy away from exploiting anti-Ukrainian sentiment for refugees, criticizing Kiev and its EU and NATO plans to join, and his presence at the NATO summit could complicate the European Union's joint pro-Ukrainian front.

Nawrocki will have less influence on other EU issues he also opposes, such as deeper integration, joint lending and green deals in Europe, but the overall impact of his election on Poland's pro-EU ambitions will be shocking.

European Commission President Ursula von der Leyen said on Monday that the EU will continue to engage in "very good cooperation" with Poland. But analysts note that Polish conservatives made a dedication to Tusk's entire Pro-eu agenda on Sunday's vote.

The victory of European populist EU-critical party led by Italian Prime Minister Giorgia Meloni also promoted the European Union key parties, as well as the host of Viktor Orbán, the Hungarian Prime Minister and Bloc host, whose main legal rules script PIS followed.

Hungarian Foreign Minister Peter Szijjártó said on Monday’s Facebook page that Nawrocki’s victory was “a new victory for the Patriots.”

Nawrocki was invited to Washington by Trump and shared a selfie with the U.S. president, who opposed Europe's recent security transfers, from the U.S., and favored a closer transatlantic connection, another tension with Tusk and Brussels and Brussels.