A majority of the country now think Britain should remain inside the European Union, according to a new poll released days before the critical Brexit vote in parliament.

The exclusive research for The Independent shows that, as of this month, 52 per cent favour staying in the trading bloc.

The data from pollsters BMG Research reveals support for remaining has grown month by month since the summer, and broke past 50 per cent in December as the complex realities of Brexit were brought home to the country.

The poll also revealed that almost half of people think the withdrawal agreement settled by Theresa May is a “bad deal” for Britain, with around as many saying MPs should reject the deal outright when they take the critical decision on Tuesday.

The BMG Research study lays waste to any hope that a concerted publicity drive, which has seen Ms May and her ministers tour the country to persuade people of its merits, has been a success.

Instead it shines a light on the deep divisions that still exist, with none of the immediate alternative paths beyond Ms May’s plan – a second referendum, a Norway-style relationship or no deal – enjoying majority support.

It came as close May ally Amber Rudd publicly backed the Norway option as her preferred route, should Ms May’s strategy come to naught.

In a further development ex-European Commission president Romano Prodi said Brussels could renegotiate the deal if MPs vote against it, creating the opportunity for Ms May to seek further concessions.

Work and Pensions secretary Amber Rudd backs Theresa May's Brexit deal because 'it works in the National interest'

When BMG asked some 1,500 respondents, “should the United Kingdom remain a member of the European Union, or leave the European Union”, 52 per cent said “remain”, 40 per cent said “leave”, six per cent said they did not know and one per cent refused to say.

The remain option has been in the high 40s most of this year, but from September to October it rose one point and then another point to 49 per cent in November, meaning it rose three points in December to its current level.

When respondents were asked whether they believed the withdrawal agreement and political declaration on the future relations secured by Ms May are a “good deal” or a “bad deal”, 49 per cent chose the latter.

Just over one in ten, 13 per cent, said it was a good deal, while 23 per cent said it was “neither good nor bad” and 15 per cent said they did not know.

When asked whether MPs should back or oppose the deal, 43 per cent said it should be rejected by parliament, 26 per cent said it should be accepted and 31 per cent said they did not know.

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PA A historic moment: thousands march to demand Final Say on Brexit Final Say campaigners take part in the peoples vote march for the future in London 20/10/2018 Protesters wearing final Say shirts and holding placards Angela Christofilou A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final say Brexit march - final say on our furture London, 20 October 2018 Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit MP Chuka Umunna (left) and MP Vince Cable (right) as MP Anna Soubry (centre) addresses Anti-Brexit campaigners at a rally after the People's Vote March for the Future in London, a march and rally in support of a second EU referendum. PA A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit A People’s Vote march attendee calls for a Final Say Angela Christofilou A historic moment: thousands march to demand Final Say on Brexit Demonstrators with banners 'We're with EU' during the People's Vote March for the Future in London, Britain, 20 October 2018. Reports state that the 'March for the Future' is to be led by a column of young people and call for a Peopleâ€™s Vote on the Brexit deal. After marching through central London, there will be a rally on stage in Parliament Square, including speeches from Mayor of London Sadiq Khan. EPA A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Protesters at London’s march for the future in October The Independent A historic moment: thousands march to demand Final Say on Brexit Editor of The Independent Christian Broughton speaks to demonstrators in Parliament Sqaure after they take part in a march calling for a People's Vote on the final Brexit deal, in central London on October 20, 2018. - Britons dreading life outside Europe gathered from all corners of the UK to London on Saturday to try to stop their country's looming breakup with the EU. AFP/Getty A historic moment: thousands march to demand Final Say on Brexit A poster at the March for the Future in October The Independent A historic moment: thousands march to demand Final Say on Brexit Anti-Brexit campaigners take part in the People's Vote March for the Future in London, a march and rally in support of a second EU referendum. PA A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say campaigners take part in the peoples vote march for the future in London 20/10/2018 Angela Christofilou A historic moment: thousands march to demand Final Say on Brexit Final say Brexit march - final say on our furture London, 20 October 2018 Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final say Brexit march - final say on our furture London, 20 October 2018 Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Anti-Brexit campaigners take part in the People's Vote March for the Future in London, a march and rally in support of a second EU referendum. 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AFP/Getty A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final say Brexit march - final say on our furture London, 20 October 2018 Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final say Brexit march - final say on our furture London, 20 October 2018 Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou A historic moment: thousands march to demand Final Say on Brexit Final say Brexit march - final say on our furture London, 20 October 2018 Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final say Brexit march - final say on our furture London, 20 October 2018 Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final say Brexit march - final say on our furture London, 20 October 2018 Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final Say march for the future London, 20 October 2018 Credit: Angela Christofilou/The Independent Angela Christofilou/The Independent Angela Christofilou/The Independent A historic moment: thousands march to demand Final Say on Brexit Final say Brexit march - 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Britons dreading life outside Europe gathered from all corners of the UK to London on Saturday to try to stop their country's looming breakup with the EU. AFP/Getty A historic moment: thousands march to demand Final Say on Brexit Demonstrators wave Union and European flags and hold up placards as they pass Trafalgar Square, taking part in a march calling for a People's Vote on the final Brexit deal, in central London on October 20, 2018. - Britons dreading life outside Europe gathered from all corners of the UK to London on Saturday to try to stop their country's looming breakup with the EU. AFP/Getty A historic moment: thousands march to demand Final Say on Brexit Demonstrators hold placards as they take part in a march calling for a People's Vote on the final Brexit deal, in central London on October 20, 2018. - Britons dreading life outside Europe gathered from all corners of the UK to London on Saturday to try to stop their country's looming breakup with the EU. AFP/Getty A historic moment: thousands march to demand Final Say on Brexit A demonstrator holds a message during a march calling for a People's Vote on the final Brexit deal, in central London on October 20, 2018. - Britons dreading life outside Europe gathered from all corners of the UK to London on Saturday to try to stop their country's looming breakup with the EU. AFP/Getty A historic moment: thousands march to demand Final Say on Brexit Anti-Brexit campaigners take part in the People's Vote March for the Future in London, a march and rally in support of a second EU referendum. PA A historic moment: thousands march to demand Final Say on Brexit Demonstrators take part in the 'People's Vote March for the Future,' in central London, Britain, 20 October 2018. Reports state that the 'March for the Future' is to be led by a column of young people and call for a Peopleâ€™s Vote on the Brexit deal. 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The march organised by the People's Vote campaign is led by young people calling for a People's Vote on the Brexit deal Rex A historic moment: thousands march to demand Final Say on Brexit Anti-Brexit campaigners take part in the People's Vote March for the Future in London, a march and rally in support of a second EU referendum PA

Similar ratios appeared when people were asked if the PM could have done better, with 44 per cent saying she could have, 27 per cent saying she could not and 28 per cent saying they did not know.

Some 43 per cent also said Ms May should resign if her strategy fails, though 36 per cent said she should not, and 22 per cent said they did not know.

With the vote widely expected to go against Ms May on Tuesday, speculation has moved on to what alternative options may emerge, with the most talked about being a new referendum, a no-deal Brexit or the UK moving into a Norway-style relationship – a path favoured by some cabinet ministers.

LBC caller wants Brexit even though it'll put her out of business

But the country was split on all three routes. People were against no deal by 44 per cent to 37 per cent, for a new referendum by 46 per cent to 30 per cent and for Norway by 41 per cent to 39 per cent.

A sign of just how difficult it will be to secure any deal that enjoys broad support came from another question, which asked respondents to say what it is that is most important for a Brexit deal to secure.

The equal top answers were “controlling immigration” and “maintaining smooth trading links with the EU” – two things which, to an extent, are mutually exclusive because of the red lines set out by the EU and UK in negotiations.

Ensuring that there is no border erected between Northern Ireland and the Republic of Ireland – the matter at the heart of opposition to Ms May’s plan – was rated as the key issue by just six per cent of people.

Ms May is likely to play for time if the vote does go against her next week, and travel to Brussels for a summit of the European Council where she may ask for further concessions to try and make her deal more palatable to MPs.

Despite a string of European figures saying there could be no further talks, ex-commission president Mr Prodi appeared to throw Ms May a lifeline on Saturday. Asked how he expected the commission to respond after the vote, he said: “Negotiate. We must keep free trade between us because it is in the British interests and European interest.”

On Saturday, Ms Rudd hit out at Brexiteers who she said “flounce out quite a lot” instead of trying to get things done, an attack coming after Boris Johnson and David Davis quit the cabinet over Ms May’s deal.

All have leadership ambitions and have been jockeying for position ahead of a potential future contest in the coming weeks.

In an interview, Ms Rudd also took the unusual step of revealing details of a private conversation with the prime minister, even critiquing her leadership style by saying “she is not always forthcoming” about what she wants.

Ms Rudd is seen as a leading candidate from the moderate wing of the party and even said in her interview that she hoped it chooses a “centrist” figure for its next leader, though she said a contest at this point would be “too indulgent”.