Donald Trump and Joe Biden won by a landslide on Super Tuesday, the maxi round of US primaries with 15 states and an American territory, securing the nomination and therefore the rematch in the November elections.
But both see their vulnerabilities confirmed.
Nikki Haley, the tycoon's Republican rival, prevents him from striking by surprisingly winning the liberal Vermont, his second success after the capital.
And if at first it seemed he had no intention of giving up, continuing to attract a hard core of moderate or independent voters who could compromise Trump's chances of victory in the general elections, according to CNN he could announce his withdrawal from the race today.
According to the Wall Street Journal, Haley will announce her farewell in a speech in Charleston, South Carolina around 10am local time, 4pm in Italy.
The dem leader also loses a round and fails in the caucuses of the Samoa islands, where he loses to an unknown local candidate, the entrepreneur Jason Palmer.
And he finds in the polls of some states, such as Minnesota, the protest of the Arab vote for support for Israel despite the "genocide" in Gaza.
For the rest, Super Tuesday goes as expected, with Trump and Biden grabbing almost all of the delegates up for grabs, around a third of the total.
Including the richest spoils, those of California and Texas, the two most populous states in the country.
Before all the results were announced, the tycoon delivered his 'victory speech' live on TV at Mar-a-Lago, where on Sunday he also met Elon Musk and other Republican financiers, looking for money for his campaign but perhaps also to pay the almost 500 million fines for the inflated assets.
Video Trump: 'It really was a 'Super Tuesday' for us'
“They call it Super Tuesday for a reason, it was a terrific night,” he said, boasting that he had done “something no one had done before in history” and accusing Biden of being “the worst president ever.”
Then he prophesied that the Republican Party "will soon be reunited," increasing pressure for Haley to leave the race.
Biden responded harshly but only with a statement from his campaign: Trump "is determined to destroy our democracy, to tear away fundamental freedoms such as the ability for women to make their own healthcare decisions, and to approve another round of billions of dollars in tax cuts for the rich - and will do or say anything to get into power."
Haley also preferred to rely on a note to reply to the tycoon, maintaining that "unity cannot be achieved by simply saying 'we are united'".
"There remains a large group of Republican voters who are deeply concerned about Trump....this is not the unity our party needs to succeed. Addressing these concerns will make the party and America better," she warned .
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