The BBC found that opposition to bills that would dying in England and Wales are growing.

Last year, the Auxiliary Dying Bill received the support of 330 MPs and received the first major vote in the House of Commons, most of which were from the majority of 55 MPs from various political parties.

But at least a dozen members of Congress who supported or abstained in November now said they might vote against it.

The bill will allow terminally ill adults who are less than six months old to live to die with medical assistance

Supporters are still confident that it will eventually become law, but it faces further parliamentary examinations.

The bill is a private member bill sponsored by Backbench Labor MP Kim Leadbeater.

Members of Congress voted freely on this, meaning they could decide based on their conscience without having to follow the party.

Over the past few months, they have checked it in detail and have made more than 500 amendments.

Some of these changes will be voted by lawmakers next Friday - a final public vote will be held in the summer before heading to the House of Lords for further review.

Penrith and Solway's Labour MP Markus Campbell-Savours are among those who say he might vote against the bill after he had previously supported it.

He said he still considers himself a “supportive dying supporter” but believes the current bill crosses the red line of “protecting vulnerable groups.”

Campbell-Savors said: "I want to see safeguards that will ensure that auxiliary dying is not over-expanded to include situations where there are other ways to improve their quality of life."

“If legislation creates a kind of burden on one’s family, I’ll also be very worried that they feel the pressure to end their lives.”

Labour MP Josh Fenton-Glynn also plans to vote for no, after abstaining from power.

He told the BBC: "If you ask me anything at any time in your life, what I keep saying, I always say."

He suggested many amendments to the bill and claimed he was "still supporting" the program, but suspected it would change after similar attempts before Leadbeater lockdown.

“We’ve seen a lot of amendments designed to stop coercion from being opposed by supporters of the bill,” he said, adding: “I don’t think there’s a chance to make the bill safer.”

The two MPs added their names to a growing list of colleagues, who suggested they would switch off deputys, including: former Conservative Minister George Freeman, Conservative MPs Mike Mike Wood and Andrew Snowden, Lib Dem Dem Brian Matthew, Labour's Jonathan Hinder, Reform UK Chief Chiefs HP Lee Anderson and former Whip Lee Anderson and former Repute Rupert Lowe.

Labor MP Debbie Abrahams and Conservative MP Charlie Dewhirst previously abstained and will vote against it.

Labour's Karl Turner was voted in favor in the second reading and is now abstained.

Conservative MP David Davis has not announced how he plans to go to his next vote, but has publicly supported many amendments that will make comprehensive changes to the bill.

Some MPs have also changed their position by supporting the bill. It is understood that Minister Chris Bryant abstained in November. Labour MP Jack Abbott, who voted against last November, is now also likely to vote for it.

Now, others who are hesitant to support it are now more firmly in favor.

Liz Saville Roberts, the leader of Westminster Grid Cymru, said she was initially worried but supported the principle of assisted death.

“I think the safeguards have become stronger,” she said. “Through the bill committee and the evidence we hear, they have improved.”

One of the changes made during the review of the bill allowed Senedd members to vote on whether it applies to Wales.

Despite opposition, supporters hope the bill clears the House of Commons and continues to the House of Lords.

The campaigners supporting the bill don’t want many MPs to turn their perspectives around – but with such a tense profit, efforts to support support are in full swing.

One major threat for supporters of the bill is the decision by members of Congress to return to their constituencies rather than to vote homes.

Due to the quirks of the parliamentary system, bills of private members are often debated on Fridays – a day when MPs are usually their constituency.

There is growing concern that the government will not continue to give parliament time.

A labor source who opposes the bill told the BBC: “Given the huge difficulties faced by the government, strict voting for assisted deaths has become a real problem, from winter fuel payments and individual independent payments to defense and special education needs and people with disabilities spending.

“Many members of Congress believe that 10th place is unwise, and political capital continues to address this very split problem rather than choosing to solve the things we choose to categorize.”