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.
More top news
A Bolton chemistry teacher is to be sentenced today after admitting terror offences - with police claiming he wanted to join Islamic State.
Average household incomes have returned to around the levels they were at before the financial crisis hit, new analysis indicates.
Figures uncovered by a Freedom of Information request reveal one university leader received £623,000 in 2013/14.