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Lib Dems 'must stay in government,' says Nick Clegg

18 September 2013 Last updated at 22:46 BST

The Liberal Democrats must be part of a coalition government after the next election to stop the Conservatives or Labour "messing up", says leader Nick Clegg.

Speaking to his party conference in Glasgow, he said Britain was now a "step closer" to the death of single party government.

Nick Robinson reports