Lib Dems are in Government - but they are not in Power. Having being swallowed, they can now prepare to be digested. Perhaps "inside Government" might be a better way to express it...

Will you walk into my parlour?" said the Spider to the Fly,
'Tis the prettiest little parlour that ever you did spy;
The way into my parlour is up a winding stair,
And I've a many curious things to shew when you are there."
Oh no, no," said the little Fly, "to ask me is in vain,
For who goes up your winding stair can ne'er come down again."