The Liberal Democrat president Tim Farron has told BBC News that there are "more important things than Lords reform."
"It'd be very silly for anyone to go off in a hissy-fit over Lords reform," he said, adding that "I would not have voted for elected police commissioners" if it wasn't for the coaltion agreement.
Asked if the coalition government would last to 2015, Farron replied: "It must."
ITV News learns that Mr Cameron hadn't squared his watered-down Lords plan with Nick Clegg and the Lib Dems.
In his final Prime Minister's Questions before recess, the man in question looked as though he needed a holiday more than ever
The Government has retreated on its plans to reform the House of Lords after dropping a vote on the timetable for legislation.