CHRISTCHURCH is one of just two parliamentary constituencies to back Theresa May's Brexit deal, according to the latest poll.

The Dorset town, where Conservative Sir Chris Chope MP romped to victory at the last general election with a 25,000 majority, stands alongside the constituency of Broxbourne, Hertfordshire.

During the 2016 referendum, Christchurch voters backed leaving the European Union by a majority of 17 per cent, making it the leading pro-Brexit constituency in the Bournemouth conurbation. This was mainly because of its elderly population.

Last month the Prime Minister delivered a stark ultimatum to MPs - her deal, no deal or no Brexit.

A vote will take place in the House of Commons on December 11.

YouGov has tested public opinion on these outcomes using MRP constituency modelling, the same method that delivered near-perfect projections of a hung parliament in 2017.

Over the past week 20,910 Britons were polled, making this one of the largest Brexit surveys to date.

Asked to rank the deal/no deal/remain options in order of preference, just the Tory constituencies of Christchurch and Broxbourne picked Mrs May's deal as first choice.

In total, the PM's deal had just 27 per cent support across Britain.

This puts it behind remain, which has 46 per cent support nationally and is first preference in 600 constituencies.

No deal, while first choice in 30 sets, also polled 27 per cent support nationally.

Sir Chris, a staunch Brexiteer, is opposed to the Prime Minister's deal.

Speaking recently, he said: "I’m absolutely diametrically opposed to it and I’m assured by a very large number of colleagues that they hold a similar opinion.

“The Democratic Unionists certainly seem to hold the same opinion so it’s not going to go through unless the prime minister does a deal with the Labour party. The consequences of that would be disastrous for the future of the Conservative party, in my view."

He said he had already been given authority by his local party’s executive to submit a letter to Sir Graham Brady, the chairman of the party’s backbench 1922 Committee, seeking a vote of no confidence in Mrs May.

A vote will take place if Sir Graham receives 48 such letters.

On the latest poll, a YouGov spokesman explained: "One way of analysing the results to show pragmatic support is to use the 'Condorcet method'.

"With this approach, instead of looking for which option is most people's first choice, you instead test which one beats all others in a head-to-head fight.

"We do this by removing each option in turn, and then looking at the second choice of people who backed that option.

"If you remove the deal as an option and reallocate these preferences in a straight remain versus no deal contest, remain is slightly ahead, winning 52per cent to 48 per cent."

If the deal is pitted against no deal, the majority of remainers swing behind what Theresa May is proposing, meaning it wins 65 per cent to 35per cent.

"The calculation for remain versus the deal is a lot tighter," said the spokesman. "Although the vast majority of no-dealers swing behind May’s plan, because remain begins from a much higher stating point, the result is a statistical dead heat – with 50 per cent for each option."

The research was conducted by YouGov, Ben Lauderdale of LSE and Jack Blumenau of UCL in collaboration, the same team which worked on the 2017 general election model.