Nick Clegg said he "cannot envisage any circumstances" that would see the coalition collapse before the 2015 general election.
The Deputy Prime Minister added that he "really thought" the Liberal Democrats and Conservatives would continue governing until that time.
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A rollercoaster has reportedly come off the rails at a theme park in Scotland.
"I saw a lot of smoke come out from the tail-end of the aircraft. I wondered if it was normal, whether it was just exhaust fumes."
The House of Commons Petitions Committee has said they will keep an eye on the petition and are concerned about fraudulent signatures.