DOUGLAS Ross has said Boris Johnson should consider quitting as Prime Minister after 40% of his MPs voted against him in a confidence vote.
Speaking to the BBC on Wednesday about whether Johnson should go, the Scottish Tory leader said "he's got to consider it".
He went on to say MPs across the entire party had no confidence in him and highlighted how no prime minister had ever lost so much support from within their own party.
Ross said: "I think he really does need to reflect on that."
The Moray MP performed a second U-turn on Monday after he said he would not be backing the PM in the vote.
He originally said he no longer supported Johnson when pictures began to emerge of lockdown parties at Number 10 and submitted a letter of no confidence to the 1922 Committee. He later withdrew it because of the war in Ukraine.
Johnson was backed by 211 MPs to 148, but the consensus is his position is far from secure due to a higher than expected number of rebels.
Ross said the number of MPs who said they did not support Johnson was "particularly troubling" and "extremely serious".
He added: "This isn't just some Scottish MPs, some Welsh MPs, and a few from certain parts of England.
"This is across the entire parliamentary party – from people who supported staying in the EU and people who campaigned strongly to leave the EU, people who are on the right of the party, some in the centre and some on the left."
He did not say who he thought should head up the Tories instead of Johnson.
Asked whether the PM had misled Parliament over Downing Street parties, he said Johnson's responses had been "quite clear" yet the evidence "suggests otherwise".
When asked whether Johnson was a liar, Ross said: "I think he has serious questions to answer."
