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.
Gordon Brown will not enter the Scottish Labour leadership race, a source close to the former prime minister has confirmed.
Brown was tipped as a possible replacement for Johann Lamont after her resignation last week.
Some party members suggested Brown was a unifying figure, highlighting the work he did for the No campaign during the run-up to the Scottish referendum.
"For the past four years, and on every occasion he has been asked, Mr Brown has made it clear he is not returning to frontline politics, a source close to Brown said. That position has not changed."
Survey suggests Nationalist landslide in Westminster election
Scottish leader Johann Lamont's resignation highlights the post-referendum divisions.