Nick Clegg has ordered a rebranding of the Liberal Democrats amid signs that he could face a challenge to his leadership if his party continues to slump in the polls.

The Deputy Prime Minister has commissioned a complete rethink of Lib Dem strategy amid rumblings about his stewardship at the highest level.
Insiders say senior party figures including Chris Huhne, a former leadership contender, have been jockeying for position behind the scenes.
Rumours about Mr Clegg's leadership have emerged after mounting discontent among party members in the country who are furious at the direction the party has been taking in government.
Rank and file activists, who are more left wing than Mr Clegg, reject many of the more right wing policies adopted by their leader since he entered into coalition with the Tories.
The rise in university tuition fees and the speed and depth of cuts to public spending are particular bones of contention.