The move in Pennsylvania came as analysts suggested polls from right-leaning groups might be exaggerating his popularity - and would be used by Trump to claim cheating prevented him from returning to the White House.
The warnings - from Democrats and anti-Trump Republicans - come as Americans prepare to vote on Tuesday in the most consequential presidential contest in generations.
Most polls show Trump running neck and neck with Kamala Harris, the vice-president and Democratic nominee, with the two candidates seemingly evenly matched in seven swing states.
They both held rallies in Las Vegas, in the battleground state of Nevada, on Thursday night, with Harris appearing alongside Jennifer Lopez and telling the crowd: "If he were re-elected, Donald Trump would walk into that office with an enemies list. When I am elected, I will walk in with a to-do list."
Trump told his supporters: "She is the worst vice-president in the history of our country. Kamala, you're fired! Get the hell out of here. She is horrible.
And she lies. Every time she gets up she tells a lie." But suspicions have been voiced over a spate of recent polls, mostly commissioned in battleground states from groups with Republican links, that mainly show Trump leading. The projection of surging Trump support as election day nears has drawn confident predictions from him and his supporters.
"We're leading big in the polls, all of the polls," Trump told a rally in New Mexico on Thursday. "I can't believe it's a close race," he told another rally in North Carolina, a swing state where polls show he and Harris are in a virtual dead heat.
Trump, who falsely claims that Joe Biden stole the 2020 election, is also paving the way for repeating the accusation via legal means.
This story is from the November 02, 2024 edition of The Guardian.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the November 02, 2024 edition of The Guardian.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
Money hacks How to use your Christmas gift vouchers wisely
The first thing to do is read the small print (it could be very small if it is squeezed on the back).
'It's not job done' More change to come as M&S gets its spark back
M&S menswear, above, is starting to compete for style with specialist rivals while the company's menswear has successfully caught the attention of younger buyers
Taken to court ... as a victim of identity theft
A fraudulent phone contract has been taken out in my husband's name and he is now threatened with court action.
New start Is 2025 the right time to become your own boss?
Going freelance is not without risk but if you want to shed the shackles of your 9-5, then Suzanne Bearne can help you plan it properly
Feeling the heat British Gas hit by 400,000 complaints
It has been both astonishing and appalling in equal measure,\" says Jonathan Hattersley, 66, from Cambridgeshire.
Biden Blocks Japanese Firm's $15bn Bid for US Steel Over Security Fears
Joe Biden blocked a $14.9bn (£12bn) bid by Japan's Nippon Steel for US Steel yesterday, citing concerns the deal could hurt national security and following through on a pledge to keep the company domestically owned as he prepares to depart the White House.
We're like snipers' Lethal and cheap, drones dominate the frontline now
Denys, a soldier with Ukraine's Khyzhak brigade, describes a new kind of war. Standing in a barracks workshop with piles of basic Ukrainian first-person view (FPV) drones behind him, he says: \"There are fewer gunfights because there are more drone fights.\" Frontlines that were once a gunshot apart are now a killing zone several miles deep as Russian and Ukrainian drone squads hidden behind the frontlines target each other's forces with aerial attacks. \"Back in 2022, we were still running around with machine guns from the tree lines,\" Denys says, almost with nostalgia.
Profits at GB News owner's hedge fund plunge 64%
Profits at the hedge fund co-founded by the GB News and Spectator owner Sir Paul Marshall plunged by almost two-thirds last year, resulting in significantly reduced payouts for its partners.
Call to stick to tougher green targets amid record EV sales
Carmakers sold a record number of electric cars in the UK last year, prompting environmental groups to urge the government to stick to tougher green targets even as the industry argues they are unsustainable.
Handbags and watches help take Thailand PM's declared worth to £322m
Thailand's prime minister, Paetongtarn Shinawatra, has declared £322m in assets, including a collection of 217 designer handbags and 75 luxury watches in submissions on her wealth to a government body.
