Tories are predicted to come 3rd in the 22 May Euro elections.
They are predicted to lose councillors in the local elections on the same date.
Then there's the Scottish referendum.
How many of these elections can he afford to lose before someone in his party overthrows him?
Who will be leading the party at the General Election in May 2015?
Same question about Clegg - when will the Libs ditch him as unelectable?