A new poll suggests Labour and the Liberal Democrats are both facing potential general election disaster in Scotland.
The survey for STV suggests if there were an election tomorrow, the SNP would register a massive landslide, winning 54 of the 59 Scottish seats up for grabs.
Jim Murphy has vowed to end the "period of self harm" that Scottish Labour has been through if he becomes party leader.
The Shadow International Development Secretary has announced his candidacy for the leadership, joining MSPs Neil Findlay and Sarah Boyack in the race to replace Johann Lamont, who resigned on Friday
Mr Murphy told BBC News he was confident the party could produce a strong performance in next year's general election.
"I'm not interested in left-wing Labour or right-wing Labour, or old Labour or new Labour. I'm interested in losing Labour," he said.
"I want to end that period of losing Labour here in Scotland, starting with the UK general election in 2015, where I'm confident we can hold all the seats we currently have but pick up one or two on top and also win that election in 2016 for the Scottish Parliament."
Survey suggests Nationalist landslide in Westminster election
Scottish leader Johann Lamont's resignation highlights the post-referendum divisions.