Finally, shifting the presidential electorate a mere two percentage points or so dramatically increases the chance that Romney becomes president, so no veto.
Mr Clegg's absence from the Commons on Monday was one of the main talking points after the prime minister fielded questions from MPs about his reasons for using the UK's veto to block EU-wide treaty changes designed to facilitate closer union between eurozone members.
In particular, the thorny and emotive issue of whether families will have a veto on whether their relative's organs will be donated after death is going to be one of the crucial points that the government will need to have absolute clarity on when it introduces the Bill - clarity that has to some extent been absent so far.