Conservative chairman Richard Holden looks set to be parachuted into a safe seat at the last minute, against the wishes of local Tories.
Two local Tory officials told the BBC Mr Holden was the only candidate offered by the national party to represent the Essex seat of Basildon and Billericay, with one saying it was a "slap in the face" for local Tories.
A cabinet minister told the BBC the move had "gone down like a bucket of cold sick”.
Mr Holden has represented North West Durham, nearly 300 miles further north, since 2019.
But his seat is being abolished as part of a scheduled review of UK seat boundaries for this year's election, meaning he had to find another one.
Mr Holden has not responded to requests for a comment. A Conservative Party spokesperson: “We do not comment on selections.”
'Mind blowing'
A prospective Conservative candidate said: “I speak for an awful lot of people who are outraged.
"There are several cabinet ministers who are fighting marginal seats and know they are going down.
"Not only has Richard given himself a safe seat, but he’s used a ridiculous process no one has ever heard of before. It’s mind-blowing.”
It comes as the Conservative Party scrambles to put together a full slate of candidates ahead of the registration deadline on Friday.
Basildon and Billericay has been represented by veteran Tory MP John Baron since 2001, but he announced last October he would be leaving Parliament.
He won the seat for the Tories with a 20,412 majority at the last election, making it an attractive area for the party's candidates this time round.
Richard Moore, the chairman of the local association, told the BBC they had expected to get a choice of three hopefuls from the national party ahead of a meeting later to choose the candidate.
'Don't know him'
But he said the central party's candidate committee rang him earlier to say "you’re just getting the one".
He added that local members were "extremely put out" that the party had waited until two days before nominations close to put forward a candidate.
"This could have all been done in March or April," he said, adding that the central party "have sat on this for seven months".
"My constituency people haven’t met Richard Holden. We don’t know him. We don’t know what he’s done," he added.
"Yes he’s chairman of the party, but so what? What has he done for Basildon and Billericay? Nothing."
Andrew Baggot, a local Conservative councillor, also criticised the process, calling it a "slap in the face to local councillors, volunteers and the membership".
He said association members were "exploring" options to fight the decision.
A meeting of the Basildon Conservative Association's executive council is expected to take place on Wednesday night to discuss next steps.
"Of course we are running out of time, because the nominations have to be in by 4pm on Friday," Mr Baggot told PA Media.
"We have to organise people. It is deliberately being left to the last minute to prevent any action being able to be taken."