On an explosive night, the Republican office-holder accused Democrat opponents of “fraud on the American public” and even claimed victory before all the results had been announced.
Mr Trump, 74, delivered a defiant address from the White House, vowing to take his fight to the US Supreme Court for “the law to be used in a proper manner. We will win this and as far as I’m concerned we already have won it.”
Speaking from Washington DC, Mr Farage – who bet £10,000 on a Trump win at 15/8, potentially netting him £28,750 – said: “The election result is now on a knife-edge. Trump is still, in my view, the narrow favourite.
“It is sadly unlikely that the result will be declared until the end of the week, perhaps longer. Some states are unable to complete the job of counting the votes [last night].
“The worry is that the whole process becomes subject to a legal challenge. This is an astounding situation for 21st century America to be in. I have asked myself, ‘How can some of these states be so incompetent?’
“I really do hope either way that we get a clear result over the course of the next few days and avoid the ugly spectacle of weeks of litigation.”
Parallels can be drawn between the Brexit Party leader’s successful insurgency in the UK for the EU Referendum in 2016 and President Trump’s against-the-odds win months later. Both were seen as anti-establishment victories.