The government has dropped plans for a key vote on reform of the House of Lords after facing the prospect of defeat.
As many as 100 Conservatives looked set to vote against a plan which would have placed a limit on the amount of time available to debate plans for an 80% elected second chamber.
The retreat has saved David Cameron from suffering the coalition's first Commons defeat. However, it opens up the prospect of opponents of change blocking the legislation by dragging out debate until time runs out.
The announcement came just hours after Prime Minister David Cameron issued a last-ditch appeal to Labour leader Ed Miliband to rethink his plans to vote with the rebels.
Our Political Correspondent, Libby Wiener followed developments at Westminster.
Conservative MP Conor Burns resigned from his unpaid role as a ministerial aide in protest at the Government's plans to reform the House of Lords. He said: