Nikki Haley suffers blow as Donald Trump secures victory in New Hampshire primary

• "I don't care if she stays in, let her do whatever she wants."
• Trump calls Biden as "worst" president in US history. 
• Former president emerged victor in New Hampshire primary.

Former US ambassador to the UN Nikki Haley suffered a knock-out blow as former President and republican forerunner Donald Trump emerged victor in the New Hampshire primary, according to the US media.

Earlier, while responding to a question about his major opponent and the former US ambassador to the UN Nikki Haley for staying into Super Tuesday, the former president said: "I don't care if she stays in, let her do whatever she wants, it doesn't matter."

During his surprise visit to a polling station at Londonderry, New Hampshire, accompanied by his ally Marjorie Taylor Greene, Trump criticised incumbent President Joe Biden saying: "I think that Biden is the worst president in the history of this country.”

“But we’re gonna all comeback. They’re all coming back. And I think you see that here," the 77-year-old added.

The worst kept secret in politics is how badly the Democrats want to run against Donald Trump," she told a watch party in New Hampshire, adding that "a Trump nomination is a Biden win."

Reacting to the former president's win, President Joe Biden's campaign said Tuesday that the result of the Republican primary confirms that Donald Trump has "all but locked up" the 2024 GOP nomination.

“Tonight’s results confirm Donald Trump has all but locked up the GOP nomination, and the election-denying, anti-freedom MAGA movement has completed its takeover of the Republican Party,” Biden campaign manager Julie Chavez Rodriguez said in a statement.

The statement also added: "Donald Trump is headed straight into a general election matchup where he’ll face the only person to have ever beaten him at the ballot box: Joe Biden."