Nicusor Dan, a liberal, pro-EU mayor Nicusor Dan, struggled with the strong challenge of Romanian right-wing nationalists to win the presidency after months of political turmoil.

George Simion, the leader of the far-right Aurora Party, won a dramatic first-round victory earlier this month, with his wave of anger at the Romanians, who announced the presidential campaign was abolished in the second half of last year due to claims of Russian intervention.

But it was Nicusor Dan's voice to win the victory, winning 54% of the vote in Romania, despite Simien's greater success among the diaspora.

"Whoever you vote for, we need to build Romania together," Dan said.

More than 11.6 million Romanians voted on Sunday's appearance, and Dan attracted more than 6 million support.

The mathematician waited until after midnight on Sunday, and he could absolutely certain that the numbers were around him, and he could join the park opposite Bucharest City Hall.

They went crazy, shouting his name and cheering. At one point, he was almost besieged, but it was a big moment for the president-elect and his supporters.

"A Romanian who hopes for profound changes in Romania won the victory," Dan said.

Mihai, one of many Dan supporters who gathered outside the election headquarters in the capital, told the BBC that he was “really worried about simion.”

He added: "I want to choose a pro-European approach. That's the only way. It's really important."

Andrea, who came with her young daughter, told the BBC: “We are so glad we want to be with other Nicosur supporters.

"It means a better future for our children, to us. A better life for all of us and honest Romania."

Romanian dominance over mainstream parties and the dominance that the EU and NATO members intensified when the collapse of early this month was as their candidates failed to compete in the second round.

When Nicusor Dan ran for the fight against corruption and maintained support for Northeastern neighbor Ukraine, Simion attacked the EU and called for cuts to aid to Kief.

"Russia, don't forget, Romania is not yours," Dan's supporters shouted.

Even though exiting the polls made him win, they did not include the most important diaspora vote and rely on the belief that he could still win.

He insisted: "I won, I am the new president of Romania and I am working on the Romanians."

It wasn't until the early hours of Monday that he admitted to winning on Facebook. Then, the protests planned by his supporters were apparently cancelled.

During the election, Simion fought side by side with Calin Georgescu, a far-right fringe figure who shocked Romania with his first-round presidential victory late last year, inspired by Tiktok's huge campaign.

The vote was canceled on charges of campaign fraud and Russian intervention and Georgeku was banned from running again. Russia denies any involvement.

George Simion said on Sunday when asked by the BBC if he was Georgescu's puppet: "Puppets are the ones who abolish the elections...I am my people, and my people voted for Calin Georgescu.

"We only like democracy when good people win? I think it's an option."

He said he was a patriot and accused him of calling it mainstream media something that painted him into a pro-Russian or fascist.

The key to Simion's success in the first round was his extraordinary victory among Western European expatriates, including the UK.

His supporters took effect again on Sunday, with some results giving him 68.5% support, 66.8% in Spain, Italy and 67% in Germany. He also has an advantage in the UK, and if authorities did not ban him from running, voters said they would choose Calin Georgescu.

"We knew nothing about[Georgescu]but then I heard what he was saying, and you could say he was a good Christian," said Catalina Grancea, 37.

If Simion wins, she vows to return to Romania, and her mother, Maria, said she also voted for the change: "Our children were forced to leave Romania because they couldn't find any jobs there."

However, Nicusor Dan's voters have a greater number in Romania and abroad. In neighboring Moldova, 87% of Romanians support the mayor of Bucharest.

The presidents of Moldova and Ukraine congratulated him on his victory.

"Moldova and Romania stand together, support each other and work side by side, providing a future of peace, democracy and Europe for all our citizens," said Maia Sandu.

"For Ukraine, as a neighbor and friend, it is important to use Romania as a reliable partner," said Volodymyr Zelensky of Kiev.

European Commission President Ursula von der Leyen said on social media that Romanians have already had a large number of members and “choose the promise of having an open, prosperous Romania in a strong Europe”.

Finally, it is an emphasis on the "no" vote for staunch nationalists, a vision of isolated on Romania, a known provocateur and a person who promises the core values ​​of EU members and the group, which is not yet clear.

Despite his outstanding performance in the first round, the Romanians who worry about what they represent seem to have gathered to stop his power.

But Simion did win most of the votes, and his message still resonates with many people.