With less than two weeks left in what has been a grueling election season in the United States, Hillary Clinton has taken a commanding double-digit lead over her opponent, Donald Trump, in a new poll from the Associated Press.

Mr Trump has insisted that he is in the lead – but polls continue to reflect a reality alternate to what Mr Trump puts forth.

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The AP-GfK poll found that likely voters support Ms Clinton over Mr Trump, 51 to 37 – a whopping margin that would all but shut the window on the prospect of a Trump victory. It also indicates the high likelihood of a major victory by the former Secretary of State.

Ms Clinton has strong support from her base, as some 90 per cent of likely Democratic voters will choose her, the poll also found. Mr Trump has only secured 79 per cent of likely Republican voters.

Seventy-four per cent of likely voters, according to the poll, believe Ms Clinton will win the election.

Nonetheless, Mr Trump recently accused Clinton campaign chair John Podesta colluded with pollsters to paint a picture of an electoral map that favours Ms Clinton.

"Wikileaks ... shows how John Podesta rigged the polls by oversampling Democrats, a voter suppression technique," he said. "And that's happening to me all the time. When the polls are even, when they leave them alone and do them properly, I'm leading."

He repeated the claim in a Wednesday interview with CNN: "I actually think we're winning," he said. "I don’t even think it’s a question of we’re going to try and win. You start looking at the polls, what’s happening, and more importantly start looking at all the people going to vote and sending in their ballots.