Jon Trickett and Ian Lavery are the two leading contenders to represent the left in the contest.
Labour's polling position was worse than it looked in the public polls, reveals Labour's official pollster.
Acting leader tells first PLP meeting that party must "throw off any sense of loss or mourning".
Boundary changes, Scotland and a new Tory leader mean the task is formidable. But five years is an eternity in politics.
Unannounced rival campaign accuses shadow ministers of "behaving like family members taking jewellery off a corpse".
Even after the losses of last night, the Labour leader retains his conviction that his focus on inequality is right.
The fundamentals - the Tories' advantage on leadership and the economy - reasserted themselves.
Party close to admitting defeat as it says the Tories "will have huge task uniting country" after SNP surge.
Conservatives forecast to be just 10 seats short of a majority as Labour fall to 239 seats and Lib Dems collapse to 10.
The scenarios that will determine whether Cameron or Miliband is PM.