Prime Minister Boris Johnson’s Conservative Party has won a thumping majority of seats in Britain's Parliament — a decisive outcome to a Brexit-dominated election that should allow Johnson to fulfill his plan to take the U.K. out of the European Union next month.

With 648 of the 650 results declared on Friday, the Conservatives had 363 seats and the main opposition Labour Party 203.

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Britain's Prime Minister and Conservative Party leader Boris Johnson leaves Conservative Party headquarters with his partner Carrie Symonds and their dog Dilyn, in London, Friday, Dec. 13, 2019. Prime Minister Boris Johnson's Conservative Party appeared on course Friday to win a solid majority of seats in Britain's Parliament— a decisive outcome to a Brexit-dominated election that should allow Johnson to fulfill his plan to take the U.K. out of the European Union next month. (AP PhotoThanassis Stavrakis)

Prime Minister Boris Johnson’s Conservative Party has won a thumping majority of seats in Britain's Parliament — a decisive outcome to a Brexit-dominated election that should allow Johnson to fulfill his plan to take the U.K. out of the European Union next month.

British opposition Labour Party leader Jeremy Corbyn speaks during the declaration of his seat in the 2019 general election in Islington, London, Friday, Dec. 13, 2019. The first handful of results to be declared in Britain's election are showing a surge in support for to the Conservatives in northern England seats where Labour has long been dominant. (AP PhotoAlberto Pezzali)

The victory makes Johnson the most electorally successful Conservative leader since Margaret Thatcher, another politician who was loved and loathed in almost equal measure. It was a disaster for left-wing Labour leader Jeremy Corbyn, who faced calls for his resignation even as the results rolled in.

British opposition Labour Party leader Jeremy Corbyn speaks during the declaration of his seat in the 2019 general election in Islington, London, Friday, Dec. 13, 2019. The first handful of results to be declared in Britain's election are showing a surge in support for to the Conservatives in northern England seats where Labour has long been dominant. (AP PhotoAlberto Pezzali)

Results poured in early Friday showing a substantial shift in support to the Conservatives from Labour. In the last election in 2017, the Conservatives won 318 seats and Labour 262.

Britain's Prime Minister and Conservative Party leader Boris Johnson stands on stage with other candidates during the Uxbridge and South Ruislip constituency count declaration at Brunel University in Uxbridge, London, Friday, Dec. 13, 2019. (AP PhotoKirsty Wigglesworth)

The centrist, pro-EU Liberal Democrats took only about a dozen seats. Lib Dem leader Jo Swinson stepped down after losing in her own Scottish constituency.

Scottish First Minister Nicola Sturgeon forms a huddle with party members at the SEC Centre in Glasgow after the declaration in her constituency in the 2019 general election, Friday Dec. 13, 2019. An exit poll in Britain's election projects that Prime Minister Boris Johnson's Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfil his plan to take the U.K. out of the European Union next month. (AP PhotoScott Heppell)

Speaking at the election count in his Uxbridge constituency in suburban London, Johnson said the “historic” election “gives us now, in this new government, the chance to respect the democratic will of the British people to change this country for the better and to unleash the potential of the entire people of this country.”

British opposition Labour Party leader Jeremy Corbyn greets party activists as he arrives for the declaration of his seat in the 2019 general election in Islington, London, Friday, Dec. 13, 2019. The first handful of results to be declared in Britain's election are showing a surge in support for to the Conservatives in northern England seats where Labour has long been dominant. (AP PhotoAlberto Pezzali)

The prospect of Brexit finally happening more than three years after Britons narrowly voted to leave the EU marks a momentous shift for both the U.K. and the bloc. No country has ever left the union, which was created in the decades after World War II to bring unity to a shattered continent.

Ballot papers cast in the 2019 general election are counted in Islington in London, Thursday, Dec. 12, 2019. An exit poll in Britain's election projects that Prime Minister Boris Johnson's Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfil his plan to take the U.K. out of the European Union next month. (AP PhotoAlberto Pezzali)

EU Council President Charles Michel promised that EU leaders meeting Friday would send a “strong message” to the next British government and parliament about next steps.

The first ballot box to arrive at the SEC Centre in Glasgow is emptied onto a table for staff to begin counting in the 2019 General Election, Thursday Dec. 12, 2019. An exit poll in Britain's election projects that Prime Minister Boris Johnson's Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfil his plan to take the U.K. out of the European Union next month. (AP PhotoScott Heppell)

Many voters casting ballots on Thursday hoped the election might finally find a way out of the Brexit stalemate in this deeply divided nation. Three and a half years after the U.K. voted by 52%-48% to leave the EU, Britons remain split over whether to leave the 28-nation bloc, and lawmakers have proved incapable of agreeing on departure terms.

Media stand opposite 10 Downing Street, just before voting closed for the 2019 General Election, Thursday, Dec. 12, 2019. An exit poll in Britain’s election projects that Prime Minister Boris Johnson’s Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfill his plan to take the U.K. out of the European Union next month. (AP PhotoVudi Xhymshiti)

The Conservatives focused much of their energy on trying to win in a “red wall” of working-class towns in central and northern England that have elected Labour lawmakers for decades but also voted strongly in 2016 to leave the EU. That effort got a boost when the Brexit Party led by Nigel Farage decided at the last minute not to contest 317 Conservative-held seats to avoid splitting the pro-Brexit vote.

The results of an exit poll are projected onto the outside of Broadcasting House in London, just after voting closed for the 2019 General Election, Thursday, Dec. 12, 2019. An exit poll in Britain’s election projects that Prime Minister Boris Johnson’s Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfill his plan to take the U.K. out of the European Union next month.  (AP PhotoVudi Xhymshiti)

It appears that wasn't enough to boost Labour's fortunes. Defeat will likely spell the end for Corbyn, a veteran socialist who moved his party sharply to the left after taking the helm in 2015, but who now looks to have led his left-of-center party to two electoral defeats since 2017. The 70-year-old left-winger was also accused of allowing anti-Semitism to spread within the party.

The results of an exit poll are projected onto the outside of Broadcasting House in London, just after voting closed for the 2019 General Election, Thursday, Dec. 12, 2019. An exit poll in Britain’s election projects that Prime Minister Boris Johnson’s Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfill his plan to take the U.K. out of the European Union next month.  (AP PhotoVudi Xhymshiti)

Johnson has been confronted with past broken promises, untruths and offensive statements, from calling the children of single mothers “ignorant, aggressive and illegitimate” to comparing Muslim women who wear face-covering veils to “letter boxes.”

Counters at work during the count at the Titanic exhibition centre, Belfast, Northern Ireland for the 2019 General Election Thursday Dec. 12, 2019. (Liam McBurneyPA via AP)

Gregory Katz, Sheila Norman-Culp and Jo Kearney in London, and Angela Charlton, Raf Casert and Adam Pemble in Brussels contributed.

“We did it — we pulled it off, didn't we?'' a jubilant Johnson told supporters. "We broke the gridlock, we ended the deadlock, we smashed the roadblock!"

Britain's Prime Minister and Conservative Party leader Boris Johnson leaves Conservative Party headquarters with his partner Carrie Symonds and their dog Dilyn, in London, Friday, Dec. 13, 2019. Prime Minister Boris Johnson's Conservative Party appeared on course Friday to win a solid majority of seats in Britain's Parliament— a decisive outcome to a Brexit-dominated election that should allow Johnson to fulfill his plan to take the U.K. out of the European Union next month. (AP PhotoThanassis Stavrakis)

Britain's Prime Minister and Conservative Party leader Boris Johnson leaves Conservative Party headquarters with his partner Carrie Symonds and their dog Dilyn, in London, Friday, Dec. 13, 2019. Prime Minister Boris Johnson's Conservative Party appeared on course Friday to win a solid majority of seats in Britain's Parliament— a decisive outcome to a Brexit-dominated election that should allow Johnson to fulfill his plan to take the U.K. out of the European Union next month. (AP PhotoThanassis Stavrakis)

The victory makes Johnson the most electorally successful Conservative leader since Margaret Thatcher, another politician who was loved and loathed in almost equal measure. It was a disaster for left-wing Labour leader Jeremy Corbyn, who faced calls for his resignation even as the results rolled in.

U.S. President Donald Trump congratulated Johnson on Twitter, and said that "Britain and the United States will now be free to strike a massive new trade deal after Brexit.”

Corbyn called the result “very disappointing” for his party and said he would not lead Labour into another election, though he resisted calls to quit immediately.

British opposition Labour Party leader Jeremy Corbyn speaks during the declaration of his seat in the 2019 general election in Islington, London, Friday, Dec. 13, 2019. The first handful of results to be declared in Britain's election are showing a surge in support for to the Conservatives in northern England seats where Labour has long been dominant. (AP PhotoAlberto Pezzali)

British opposition Labour Party leader Jeremy Corbyn speaks during the declaration of his seat in the 2019 general election in Islington, London, Friday, Dec. 13, 2019. The first handful of results to be declared in Britain's election are showing a surge in support for to the Conservatives in northern England seats where Labour has long been dominant. (AP PhotoAlberto Pezzali)

Results poured in early Friday showing a substantial shift in support to the Conservatives from Labour. In the last election in 2017, the Conservatives won 318 seats and Labour 262.

The result this time delivered the biggest Tory majority since Thatcher's 1980s heyday, and Labour’s lowest number of seats since 1935.

The Scottish National Party won almost 50 of Scotland's 59 seats, up from 35 in 2017, a result that will embolden its demands for a new referendum on Scottish independence.

British opposition Labour Party leader Jeremy Corbyn speaks during the declaration of his seat in the 2019 general election in Islington, London, Friday, Dec. 13, 2019. The first handful of results to be declared in Britain's election are showing a surge in support for to the Conservatives in northern England seats where Labour has long been dominant. (AP PhotoAlberto Pezzali)

British opposition Labour Party leader Jeremy Corbyn speaks during the declaration of his seat in the 2019 general election in Islington, London, Friday, Dec. 13, 2019. The first handful of results to be declared in Britain's election are showing a surge in support for to the Conservatives in northern England seats where Labour has long been dominant. (AP PhotoAlberto Pezzali)

The centrist, pro-EU Liberal Democrats took only about a dozen seats. Lib Dem leader Jo Swinson stepped down after losing in her own Scottish constituency.

The Conservatives took a swath of seats in post-industrial northern England towns that were long Labour strongholds. Labour’s vote held up better in London, where the party managed to grab the Putney seat from the Conservatives.

The decisive Conservative showing vindicates Johnson’s decision to press for Thursday’s early election, which was held nearly two years ahead of schedule. He said that if the Conservatives won a majority, he would get Parliament to ratify his Brexit divorce deal and take the U.K. out of the EU by the current Jan. 31 deadline.

Britain's Prime Minister and Conservative Party leader Boris Johnson stands on stage with other candidates during the Uxbridge and South Ruislip constituency count declaration at Brunel University in Uxbridge, London, Friday, Dec. 13, 2019. (AP PhotoKirsty Wigglesworth)

Britain's Prime Minister and Conservative Party leader Boris Johnson stands on stage with other candidates during the Uxbridge and South Ruislip constituency count declaration at Brunel University in Uxbridge, London, Friday, Dec. 13, 2019. (AP PhotoKirsty Wigglesworth)

Speaking at the election count in his Uxbridge constituency in suburban London, Johnson said the “historic” election “gives us now, in this new government, the chance to respect the democratic will of the British people to change this country for the better and to unleash the potential of the entire people of this country.”

That message appears to have had strong appeal for Brexit-supporting voters, who turned away from Labour in the party’s traditional heartlands and embraced Johnson’s promise that the Conservatives would “get Brexit done.”

“I think Brexit has dominated, it has dominated everything by the looks of it,” said Labour economy spokesman John McDonnell. “We thought other issues could cut through and there would be a wider debate. From this evidence there clearly wasn't.”

Scottish First Minister Nicola Sturgeon forms a huddle with party members at the SEC Centre in Glasgow after the declaration in her constituency in the 2019 general election, Friday Dec. 13, 2019. An exit poll in Britain's election projects that Prime Minister Boris Johnson's Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfil his plan to take the U.K. out of the European Union next month. (AP PhotoScott Heppell)

Scottish First Minister Nicola Sturgeon forms a huddle with party members at the SEC Centre in Glasgow after the declaration in her constituency in the 2019 general election, Friday Dec. 13, 2019. An exit poll in Britain's election projects that Prime Minister Boris Johnson's Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfil his plan to take the U.K. out of the European Union next month. (AP PhotoScott Heppell)

The prospect of Brexit finally happening more than three years after Britons narrowly voted to leave the EU marks a momentous shift for both the U.K. and the bloc. No country has ever left the union, which was created in the decades after World War II to bring unity to a shattered continent.

But a decisive Conservative victory would also provide some relief to the EU, which has grown tired of Britain's Brexit indecision.

Britain's departure will start a new phase of negotiations on future relations between Britain and the 27 remaining EU members.

British opposition Labour Party leader Jeremy Corbyn greets party activists as he arrives for the declaration of his seat in the 2019 general election in Islington, London, Friday, Dec. 13, 2019. The first handful of results to be declared in Britain's election are showing a surge in support for to the Conservatives in northern England seats where Labour has long been dominant. (AP PhotoAlberto Pezzali)

British opposition Labour Party leader Jeremy Corbyn greets party activists as he arrives for the declaration of his seat in the 2019 general election in Islington, London, Friday, Dec. 13, 2019. The first handful of results to be declared in Britain's election are showing a surge in support for to the Conservatives in northern England seats where Labour has long been dominant. (AP PhotoAlberto Pezzali)

EU Council President Charles Michel promised that EU leaders meeting Friday would send a “strong message” to the next British government and parliament about next steps.

“We are ready to negotiate,” European Commission President Ursula von der Leyen said.

The pound surged when an exit poll forecast the Tory win, jumping over two cents against the dollar, to $1.3445, the highest in more than a year and a half. Many investors hope the Conservative win will speed up the Brexit process and ease, at least in the short term, some of the uncertainty that has corroded business confidence since the 2016 vote.

Ballot papers cast in the 2019 general election are counted in Islington in London, Thursday, Dec. 12, 2019. An exit poll in Britain's election projects that Prime Minister Boris Johnson's Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfil his plan to take the U.K. out of the European Union next month. (AP PhotoAlberto Pezzali)

Ballot papers cast in the 2019 general election are counted in Islington in London, Thursday, Dec. 12, 2019. An exit poll in Britain's election projects that Prime Minister Boris Johnson's Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfil his plan to take the U.K. out of the European Union next month. (AP PhotoAlberto Pezzali)

Many voters casting ballots on Thursday hoped the election might finally find a way out of the Brexit stalemate in this deeply divided nation. Three and a half years after the U.K. voted by 52%-48% to leave the EU, Britons remain split over whether to leave the 28-nation bloc, and lawmakers have proved incapable of agreeing on departure terms.

Opinion polls had given the Conservatives a steady lead, but the result was considered hard to predict, because the issue of Brexit cuts across traditional party loyalties.

Johnson campaigned relentlessly on a promise to “Get Brexit done” by getting Parliament to ratify his “oven-ready” divorce deal with the EU and take Britain out of the bloc as scheduled on Jan. 31.

The first ballot box to arrive at the SEC Centre in Glasgow is emptied onto a table for staff to begin counting in the 2019 General Election, Thursday Dec. 12, 2019. An exit poll in Britain's election projects that Prime Minister Boris Johnson's Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfil his plan to take the U.K. out of the European Union next month. (AP PhotoScott Heppell)

The first ballot box to arrive at the SEC Centre in Glasgow is emptied onto a table for staff to begin counting in the 2019 General Election, Thursday Dec. 12, 2019. An exit poll in Britain's election projects that Prime Minister Boris Johnson's Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfil his plan to take the U.K. out of the European Union next month. (AP PhotoScott Heppell)

The Conservatives focused much of their energy on trying to win in a “red wall” of working-class towns in central and northern England that have elected Labour lawmakers for decades but also voted strongly in 2016 to leave the EU. That effort got a boost when the Brexit Party led by Nigel Farage decided at the last minute not to contest 317 Conservative-held seats to avoid splitting the pro-Brexit vote.

Labour, which is largely but ambiguously pro-EU, faced competition for anti-Brexit voters from the centrist Liberal Democrats, Scottish and Welsh nationalist parties, and the Greens.

But on the whole Labour tried to focus the campaign away from Brexit and onto its radical domestic agenda, vowing to tax the rich, nationalize industries such as railroads and water companies and give everyone in the country free internet access. It campaigned heavily on the future of the National Health Service, a deeply respected institution that has struggled to meet rising demand after nine years of austerity under Conservative-led governments.

Media stand opposite 10 Downing Street, just before voting closed for the 2019 General Election, Thursday, Dec. 12, 2019. An exit poll in Britain’s election projects that Prime Minister Boris Johnson’s Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfill his plan to take the U.K. out of the European Union next month. (AP PhotoVudi Xhymshiti)

Media stand opposite 10 Downing Street, just before voting closed for the 2019 General Election, Thursday, Dec. 12, 2019. An exit poll in Britain’s election projects that Prime Minister Boris Johnson’s Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfill his plan to take the U.K. out of the European Union next month. (AP PhotoVudi Xhymshiti)

It appears that wasn't enough to boost Labour's fortunes. Defeat will likely spell the end for Corbyn, a veteran socialist who moved his party sharply to the left after taking the helm in 2015, but who now looks to have led his left-of-center party to two electoral defeats since 2017. The 70-year-old left-winger was also accused of allowing anti-Semitism to spread within the party.

“It's Corbyn,” said former Labour Cabinet minister Alan Johnson, when asked about the poor result. “We knew he was incapable of leading, we knew he was worse than useless at all the qualities you need to lead a political party.”

For many voters, the election offered an unpalatable choice. Both Johnson and Corbyn have personal approval ratings in negative territory, and both have been dogged by questions about their character.

The results of an exit poll are projected onto the outside of Broadcasting House in London, just after voting closed for the 2019 General Election, Thursday, Dec. 12, 2019. An exit poll in Britain’s election projects that Prime Minister Boris Johnson’s Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfill his plan to take the U.K. out of the European Union next month.  (AP PhotoVudi Xhymshiti)

The results of an exit poll are projected onto the outside of Broadcasting House in London, just after voting closed for the 2019 General Election, Thursday, Dec. 12, 2019. An exit poll in Britain’s election projects that Prime Minister Boris Johnson’s Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfill his plan to take the U.K. out of the European Union next month. (AP PhotoVudi Xhymshiti)

Johnson has been confronted with past broken promises, untruths and offensive statements, from calling the children of single mothers “ignorant, aggressive and illegitimate” to comparing Muslim women who wear face-covering veils to “letter boxes.”

Yet, his energy and determination proved persuasive to many voters.

“It’s a big relief, looking at the exit polls as they are now, we’ve finally got that majority a working majority that we have not had for 3 1/2 years," said Conservative-supporting writer Jack Rydeheard. "We’ve got the opportunity to get Brexit done and get everything else that we promised as well. That’s investment in the NHS, schools, hospitals you name it — it’s finally a chance to break that deadlock in Parliament."

The results of an exit poll are projected onto the outside of Broadcasting House in London, just after voting closed for the 2019 General Election, Thursday, Dec. 12, 2019. An exit poll in Britain’s election projects that Prime Minister Boris Johnson’s Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfill his plan to take the U.K. out of the European Union next month.  (AP PhotoVudi Xhymshiti)

The results of an exit poll are projected onto the outside of Broadcasting House in London, just after voting closed for the 2019 General Election, Thursday, Dec. 12, 2019. An exit poll in Britain’s election projects that Prime Minister Boris Johnson’s Conservative Party likely will win a majority of seats in Parliament. That outcome would allow Johnson to fulfill his plan to take the U.K. out of the European Union next month. (AP PhotoVudi Xhymshiti)

Gregory Katz, Sheila Norman-Culp and Jo Kearney in London, and Angela Charlton, Raf Casert and Adam Pemble in Brussels contributed.

Follow AP’s full coverage of Brexit and British politics at https://www.apnews.com/Brexit

Counters at work during the count at the Titanic exhibition centre, Belfast, Northern Ireland for the 2019 General Election Thursday Dec. 12, 2019. (Liam McBurneyPA via AP)

Counters at work during the count at the Titanic exhibition centre, Belfast, Northern Ireland for the 2019 General Election Thursday Dec. 12, 2019. (Liam McBurneyPA via AP)