US election results: Trump predicts victory, wins Ohio, ahead in Florida, Wisconsin, Michigan, North Carolina

Donald Trump cruised to victory in Ohio’s presidential contest, signaling what could be the first domino to fall in a line that snakes through the eastern United States and ends at 1600 Pennsylvania Avenue.

The take-no-prisoners Republican also held narrow leads in Florida, and North Carolina, two states that could send America’s political power-balance tipping off a knife’s edge.

As vote-counters put Ohio in Trump’s win column, and took it away from Democrat Hillary Clinton – President Barack Obama won it twice – the New York Times’ live presidential forecast gave the billionaire builder an 91 per cent chance of winning the White House.

If Trump can hold on in other battlegrounds, a race that was widely considered Clinton’s to lose could slip out of her grasp.

With 95 per cent of Florida’s votes counted, Trump led Clinton by just 136,000 votes out of 9 million.

That would be enough to avoid the kind of recount that turned the 2000 presidential contest into a weeks-long soap opera.

In North Carolina, Trump clung to a 4 percentage-point edge with 84 per cent of the precincts reporting.

Ohio became a surprising cakewalk for Trump, who opened up an 11-point lead there with three-quarters of the votes recorded.

In the Manhattan ballroom where Trump supporters gathered Tuesday night, cries of ‘USA! USA!’ erupted each time Fox News reported that his Buckeye advantage had grown.

Earlier, before the good news began to trickle in, a senior Trump campaign official said to CNN as the results poured in: ‘It will take a miracle for us to win.’

When the network called the Illinois race in Clinton’s favor, the crowd let out loud boos. One woman yelled. ‘Lock her up!’

But then the atmosphere changed racially – and at Clinton’s party it went from confident to dejected.

The disappointment was summed up by Katy Perry turning up to rally the troops – and instead telling them her parents voted for Trump.

Other important states whose winners couldn’t be projected immediately included Arizona, Iowa, Michigan, Minnesota, Nevada and Wisconsin.

Team Trump - including Donald Trump, his family, and running mate Mike Pence - watches election results. Ivanka Trump posted the image to her Twitter feed

All of his five children, his wife Melania, as well as his sons and daughters-in-law, joined Trump for a watch party at Trump Tower

People in the crowd at Hillary Clinton's 2016 US presidential Election Night event watch results begin to come in on a big screen at the Jacob K. Javits Convention Center in New York

Supporters of Democratic presidential nominee Hillary Clinton watch and wait at her election night rally in New York on Tuesday

Clinton supporters watch in shock as Trump gains a lead in several states in the presidential election on Tuesday

Pedestrians watch the election results on large screens in Times Square, New York, on Tuesday

Supporters of Republican presidential nominee Donald Trump watch results unfold on a TV screen during election night at the New York Hilton Midtown

Women at Trump's election rally in New York hug as they celebrate the Republican nominee inching ahead in several states

A woman at Trump's election rally in New York cheers as election results are shown to the Republican nominee's supporters

Young Trump supporters celebrate at the Republican nominee pulls ahead in the presidential race

Robert Herrera, 31, displays his Trump banner on 6th Avenue in New York, not far from where Trump is holding his election night rally

Trump supporters shout with joy as Trump takes the lead in the presidential election on Tuesday night