The Conservatives have won the general election and Boris Johnson will enjoy a commanding House of Commons majority, Sky News is forecasting.
Our projection is for the Tories to have secured between 358 and 368 seats.
Meanwhile, Labour are projected to win between 192 and 202 seats, which would be their worst result in decades.
Such a result would provide the prime minister with thumping vindication of his decision to push for the first December election since 1923.
It also puts the UK on course to leave the EU on 31 January, after Mr Johnson campaigned on his promise to "get Brexit done".
Labour's much-vaunted "red wall" of safe seats across the Midlands and the North appears to have crumbled in the face of the Tories' pro-Leave position.
Blyth Valley in Northumberland, Workington in Cumbria and Wrexham in Wales were all among former Labour strongholds to fall to the Conservatives.
Despite being held by Labour since 1950, Blyth Valley turned blue thanks to a 10% swing.
And Workington, which had taken on symbolic status as a Conservative target seat in the election campaign, was won by the Tories with a similar swing.
The constituency had previously been held by Labour for 97 years out of 100 since its creation.
There were suggestions the Tories could have enjoyed even greater success in some areas, if it were not for the presence of the Brexit Party.
However, despite their success in gaining Labour-held seats, the Tories appeared to have struggled in Remain-supporting areas.
Putney, the London seat won in 2017 by former Conservative minister Justine Greening, was taken by Labour with a 6% swing.
Labour leader Jeremy Corbyn is likely to face intense pressure to resign on Friday, with even his close allies calling for an inquest into the party's election result.
Richard Burgon, Labour's shadow justice secretary, told Sky News: "We need a sober, serious analysis over the next 24 hours or so."
His fellow Labour frontbencher Dawn Butler, Labour's shadow women and equalities secretary, said: "We really have to reflect quite seriously about where we go and the direction of travel for the Labour Party."
And Ken Livingstone, the former London mayor and ex-Labour MP, admitted Mr Corbyn was likely to go.
"It looks like the end for Jeremy, which is disappointing for me since I'm a close ally. I'm sure he'll have to resign tomorrow," he said.
But Momentum - the left-wing group that grew out of Mr Corbyn's two successful Labour leadership campaigns - vowed to "keep the Labour Party socialist" in the face of the election result.
Laura Parker, Momentum's national coordinator, said: "It's unquestionable that Labour's policies are popular.
"Every poll shows it, and there is absolutely no appetite to go back to the centrist policies of old.
"But in this election we were squeezed by Brexit and it was the defining issue.
"Against that storm we built a huge movement of thousands of ordinary people and they won't stop until we see real change in this country."