Ian Murray, Scotland’s only Labour MP, has confirmed his bid to stand for deputy leader of the party.
The 43-year-old retained his Edinburgh South seat with a majority of more than 11,000 in the December election.
In the early hours of the morning after the vote, Mr Murray was critical of Jeremy Corbyn and used his own victory speech to criticise the leadership for helping to deliver “the worst Conservative prime minister in history”.
Announcing his deputy leadership bid, he said Labour would need to “beat the odds” to win another election and reiterated his stark view of the previous campaign.
He said: “The architects of the party’s catastrophic failure in 2019 cannot be allowed to be the architects of the response.
“The next leadership team must turn us into an election-winning machine that uses the skills and talents of all our members and supporters to succeed.
“To win again we will need to beat the odds, and I know how to win by building broad coalitions of support.
“The Labour Party must change. We must be honest with ourselves so we can be honest with the voters.
“Looking to the past will only prolong our years in the wilderness and put our country at risk.
“We must become a credible alternative government of the future, not a protest movement of the past.
“That’s how we lift millions of children, families and pensioners out of poverty again.”
— Ian Murray MP (@IanMurrayMP) January 7, 2020
In a piece for the Daily Mirror, Mr Murray also wrote: “I never again want to feel like I did at 10pm on the night of the general election.”
The former shadow Scottish secretary becomes the sixth candidate to declare in the contest.
He is up against shadow sport minister Rosena Allin-Khan, shadow education secretary Angela Rayner, shadow justice secretary Richard Burgon, shadow equalities secretary Dawn Butler and shadow Europe minister Khalid Mahmood.
On Monday, the party’s ruling National Executive Committee agreed the timetable for the leadership and deputy leadership elections, with the results to be announced at a special conference on April 4.