Canada reacts to the prospect of a President Trump

America's neighbours to the north fear how trade and diplomacy will fare in a Trump presidency.

At the Democrats Abroad watch party in downtown Toronto, the faces were glum.

Eric Mintz, a statistician, realised earlier than some that pollsters missed the significance of Donald Trump support, and that the Republican looked likely to clinch the win.

He described the atmosphere as "slowly descending into gloom".

"It's an extinction moment - he's an extinction candidate," Mr Mintz said, saying he feared that America as it exists now will come to an end.