It will become harder for the PM to insist he can succeed when the europhile and the europhobe both declare he will fail.
It's all about the money – of the three major paries, the Conservatives are the most likely to be able to afford a second general election campaign straight after the first.
The Prime Minister can see the strategic as well as the economic logic that keeps Britain in Europe.
Just as earlier iterations have faded fast, so too will this blue collar phase pass unnoticed and unloved.
After withdrawing from the centre-right European People's Party grouping, Cameron has no right to tell his MEPs not to flirt with the anti-Euro Alternative für Deutschland.
Any minority government would soon collapse as there would be no impetus for the Lib Dems to support the Queen's Speech.
The Scottish First Minister says that "while I was compiling the oil and gas index, David Cameron was still fooling around on the playing fields of Eton".
The Tories could use a debate between the Lib Dem leader and his UKIP opposite to argue for the head-to-head contest they want between the two main leaders.
There is no guarantee that fair distribution of opportunity will even be a factor in the election.
The lack of government legislation is so great that ministers are now constantly increasing the days allocated to Opposition motions.