More than one in five 2019 Tory voters now say they will vote for Reform UK, according to new polling.
The survey by Redfield & Wilton Strategies found 22% of 2019 Conservative backers said they would switch to the insurgent party if there was a general election tomorrow.
The company said it was a record polling high for Tory voters opting for Reform.
Just 44% said they would vote for the Conservatives again in the joint lowest recorded since Rishi Sunak became Prime Minister.
Some 20% said they would vote for Sir Keir Starmer’s Labour Party.
The poll of 2,000 British adults conducted on March 24 put Reform in third place overall with 14% of the vote share.
Richard Tice’s party is just eight points behind the Conservatives who are on 22%.
Labour are 20 points clear in the lead with 42%, while the Lib Dems are on 12%.
It comes after Reform gained its first MP with Lee Anderson’s defection earlier this month.
The Ashfield MP, a high-profile figure in the northern Red Wall, dramatically switched to the populist party after losing the Tory whip in an Islamophobia row.
Meanwhile, there is ongoing speculation over whether Nigel Farage will return as leader.
He is currently honorary president of the rebranded Brexit Party.
Pollsters have suggested he would boost the party if he made a sensational comeback.
