Former president Donald Trump says that he will not make a fourth consecutive run for the US presidency if he loses the upcoming election, stating "that will be it" in an interview released over the weekend. 

Asked if he saw himself running again in four years if he is not successful in his third consecutive bid for the White House, Trump told journalist Sharyl Attkisson: "No, I don't".

"I don't see that at all. Hopefully, we will be successful," he said in an interview on the 'Full Measure' program released on Sunday. 

Trump faces a tight race against Democratic US Vice President Kamala Harris, with polls showing the two neck-and-neck in key battleground states that are likely to be decisive in determining the winner, even as Harris has begun to edge up in nationwide polls.

Trump launched his first re-election bid for the 2020 election the same day he was inaugurated in 2017 and announced his latest White House bid two years ago in November 2022.

Asked whether the four year break helped him regroup and figure out who he could trust as allies, Trump said: "It would have been easier if I did it … contiguous."

"But the benefit is more than anything else, it shows how bad they were," he added.

Trump, who spoke with Attkisson at his Florida resort, also said it was "too early" to make deals with people for any position in his White House cabinet should he win in November.

Harris, meanwhile, raised $US27 million ($39.6 million) on the weekend in New York, the largest haul from a single event since she joined the top of the Democratic ticket campaigning for US president, a campaign official said.

The Democrat candidate is pushing for a second debate  as the November 5 election nears, while former president Donald Trump is declining, citing the start of early voting in some states.

On Sunday, Harris urged Trump to accept a proposal to debate on CNN on October 23, as a follow-up to their debate this month.

"He should accept because I feel very strongly that we owe it to the American people and to the voters to meet once more before election day," Harris told supporters at the New York City fundraiser.

"We should have another debate," she added. "My opponent is looking for a reason to avoid."

ABC/wires