Hillary Clinton has been given a more than 80 per cent chance of being the next US president in an average of final polling.

Website RealClearPolitics calculates the former Secretary of State would win 45.5 per cent of votes.

It also predicts Libertarian Party candidate Gary Johnson will gain 4.7 per cent of votes, while Green Party nominee Jill Stein would end up with 1.9 per cent.

Only one poll out of 11 shows Trump in the lead with a two percentage point advantage over Clinton.

Meanwhile a judge from swing state Nevada has rejected a request from the Trump campaign for an order to be issued regarding concerns about voting in Las Vegas.

The polling place stayed open late last week, to allow all those waiting in line to cast their vote.

Donald Trump claims it's evidence of a rigged system .

But Clark County judge Gloria Sturman has rejected the Trump campaign's bid to have all those ballots thrown out.

CNN's Jim Sciutto says the judge dismissed it very quickly.

"There Trump campaign there was also trying to get names of poll workers made public and the judge declined that as well, asking why would I unleash twitter trolls on those people. So in this case at least the Trump campaign are losing all their challenges."