From paper clip to whale psychiatry to french fries, Trump goes off on a tangent

With his third straight US presidential campaign coming down to the wire, Donald Trump mused at a rally about hydrogen-powered cars exploding, lamented how difficult it is to get spray paint off limestone and marvelled at how billionaire backer Elon Musk’s rocket had returned to Earth in one piece.

He complained Democratic rival Kamala Harris wasn’t working as hard as he was, praised Chinese President Xi Jinping as "fierce" and called former president Barack Obama "a real jerk".

His aides had billed the event in battleground North Carolina as economy-focused, but that issue was just the warm-up.

To witness Trump as the November 5 election approaches and his race against Vice-President Harris nears its end is to watch a candidate almost fully unbound. At a time when most politicians would be honing their closing arguments to voters, Trump often acts more like an entertainer on a farewell tour than someone who aims to lead the world's most powerful nation.

His unfocused behaviour and dark rhetoric risks alienating some voters in a race that, despite all he says, remains so tight that any swing of a few thousand votes in several competitive states could determine the next president.

He is giving Harris' campaign ample ammunition to argue that he is more “unstable” and “unhinged” than ever. The Democratic candidate is increasingly embracing those terms and pointing to Trump's ramblings as evidence of a tired, old man who isn’t fit for the presidency.

"In many, many ways Donald Trump is an unserious man, but the consequences of him being president of the United States are brutally serious," Harris said last week.

Trump, 78, defends his scattershot approach by saying he does something he calls “the weave” — in which he claims he always returns to his initial point — and supporters say his unscripted style is part of his appeal.

"His patented weave is a brilliant method to convey important stories and explain policies that will help everyday Americans turn the page from the last four years of Kamala Harris' failures," said Steven Cheung, a spokesperson for Trump's campaign.

Trump’s rallies have always featured their share of diversions and odd tangents. But with the clock ticking, the former president seems content to burn precious minutes telling stories about his White House days, musing about long-dead athletes or simply going where his mind takes him.

“They gave Obama the Nobel Prize," he said on Thursday in Las Vegas. "He didn’t even know why the hell he got it. He still doesn’t. He got elected and they announced he’s getting the Nobel Prize. I got elected in much bigger, better crazier election but they gave him the Nobel Prize.”

Though no rally is ever exactly alike, a consistent theme is Trump's false assertion that in four short years Democrats have transformed the nation into a dystopian state.

He denounces his political opponents as the "enemy from within" and peppers his remarks with graphic accounts of murders and rapes of young women, false tales of violent gangs taking over small towns and debunked claims about immigrants eating stolen pets.

“We’re like a garbage can for the world,” he bemoaned in Arizona.

Trump aides say he sets the pace and talks as long as he wants. They don't try to contain him — and they have put him in forums such as podcasts where his rambling ways can find a home and he won't be subjected to a battery of questions.

During a lengthy interview with podcaster Joe Rogan on Friday, Trump asserted that there may be life on Mars even though, as Rogan noted, probes have found no evidence of it. He also claimed windmills have a negative effect on whales.

"I want to be a whale psychiatrist," Trump said.

Trump has adopted a more frenetic campaign schedule with time growing short. Last week, he held events in six of the seven states likely to decide the election.

Talk of border security and crime dominated, but Trump always found time for his more indulgent flourishes.

At that point, Trump noticed how far he had veered off script. “I haven’t looked at the teleprompter for 15 minutes,” he boasted.