Final Reuters/Ipsos survey gives Clinton a 90 per cent chance of winning

With hours to go before Americans vote, Democrat Hillary Clinton has about a 90 per cent chance of defeating Republican Donald Trump in the race for the White House, according to the final Reuters/Ipsos States of the Nation polling project.

Her chances are roughly similar to last week’s odds. An upset win by Trump remains possible, but it would rely on an unlikely combination of turnouts of white, black and Hispanic voters in six or seven states, according to the survey released on Monday.

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The former secretary of state was leading Trump by about 45 per cent to 42 per cent in the popular vote, and was on track to win 303 votes in the Electoral College to Trump’s 235, clearing the 270 needed for victory, the survey found.

Trump’s slimmer chances rest with his performance in Florida, Michigan, North Carolina and Ohio, which were too close to call on Sunday, when polling ended, and Pennsylvania, where Clinton enjoyed a slim lead of three percentage points. For Trump to win, he will have to take most of those states.

Any combination of two losses in the three states of Florida, Michigan and Pennsylvania would almost assuredly result in a Clinton victory. At the same time, Trump must hold onto the traditionally Republican state of Arizona, where the race has drawn close, and hope that independent candidate Evan McMullin does not claim another Republican bastion, Utah.

To win, Trump needs higher turnout among Republican white voters than that which materialised in 2012, a drop-off in ballots by African-American voters and a smaller-than-predicted increase in Hispanic voters, the project showed.