Scottish Labour Party leader Wendy Alexander announced has resigned after failing to declare donations to her leadership campaign.
The embattled leader said she was standing down with "deep regret".
The announcement comes after the Scottish parliament's standards committee ruled she should be suspended from parliament for one day for failing to declare to donations to her leadership campaign.
Earlier today, Labour MP David Marshall announced he is to resign the Commons, piling further by-election pressure on under-fire British Prime Minister Gordon Brown.