Among the Conservative Party's haul of astonishing election scalps was Durham North West - a seat the party was not targeting and one it once discounted as impossible to win. What happened?
There are safe seats where favoured candidates can be assured of an easy victory.
And then there are places where rookies have to do their best, hoping to prove their worth for a better seat next time. For the Conservatives, Durham North West was always the latter.
Labour since 1950, it was where Theresa May was sent to cut her parliamentary teeth. As expected, she lost to Labour incumbent Hilary Armstrong by a margin of nearly 14,000 votes.
Richard Holden's victory on Thursday was less dramatic. He beat Labour's Laura Pidcock - once tipped as potential party leader or, at least, successor as deputy - by a more modest 1,144.
The table below shows the full result.
If you can't see the graphic click here.
So what happened?
Jeremy Corbyn did, thinks Anne-Marie Kennedy, back home visiting her mother in Lanchester.
"[He] now needs to go," she says. "He needs to get someone in the Labour Party that can run the party properly."
Her mother, Pauline Harrison, is equally unimpressed with the Labour leader, who she believes does not want to unify people or get Brexit done.
"The result is brilliant," she says.
But, if Boris Johnson might find these comments reassuring, Mrs Kennedy has a message for him too.
"I think, Boris, you need to be true to your word for the people," she says.
Matthew Young, from Consett which saw its steelworks close a year into Margaret Thatcher's Conservative government, says Brexit was "the crux" of the election.
"There's a man in power now who has promised to do that and I hope he does it," he says.
But Baroness Hilary Armstrong, who held Durham North West from 1987 until she stood down at the 2010 election, does not believe this was the deciding factor.
She thinks voters were more concerned about Labour's "competence".
"They quite liked some of the promises but they never believed we could deliver them," she says.
"Ordinary working people feel let down. They just feel that the Labour Party has lost touch with them - and I agree with them."
Never though I’d see the day when North West Durham would be Tory. @LauraPidcockMP couldn’t answer yes or no if her life depended upon it and paid the penalty. @Kevan4ndurham is another who has been in too long. Time for change is also needed. Get in some ambitious young blood.— Graham Robinson (@Nolanhattrick) December 13, 2019
I honestly don't know how I can attend Durham miner's gala next year knowing fine well that a large portion of people there would have voted Tory in Durham North West constituency. @LauraPidcockMP has been let down by her own area 😢— Han (@hann_machine) December 13, 2019
Just found out-Laura Pidcock kicked out of North West Durham, where my father was born, raised and worked down a pit (pit btw is the proper name for a coal mine) showing even the most loyal of Labour strongholds cannot stomach the hard left.— Bill Anderson (@butchandriley) December 13, 2019
Even the constituency's first Conservative MP, Richard Holden, sees his win in terms of a Labour loss.
"This wasn't a result which was really even about me," he says.
"This was, particularly from a lot of Labour voters spoken to on the doorstep, a real rejection of the way Jeremy Corbyn has been leading the Labour Party."
Among the voters who are shocked at the result, there are plenty looking forward to an emboldened Boris Johnson government.
Brenda Spelman, from Medomsley, is "delighted" with the Conservative win.
"Onwards and upwards," she says. "It can only get better. I think under Labour it would have got worse."
By Michael Wild, North East and Cumbria Political Programmes Editor
Until Thursday night North West Durham was the sort of "no-hoper" seat that young ambitious Conservatives looking to cut their political teeth were pointed towards.
A constituency made up of former mining and steel towns such as Consett, it was working class through and through.
At the height of Labour's success in 1997, the local MP Hilary Armstrong took nearly 69% of the vote - more than double all the other parties added together.
One Conservative keen to make her mark at the start of her career was Theresa May, a councillor in London when she travelled north to be selected as Conservative candidate at the 1992 general election.
She came second, with the future Liberal Democrat leader Tim Farron trailing in third. For Mrs May it was a step up the political ladder and by 1997 she'd been rewarded with the far more winnable constituency of Maidenhead.
But things have moved on - and the Conservative Party has proved it's capable of winning even in the former Labour heartlands of the North East.