The PM and his deputy are more dependent on each other than ever.
Clegg's party might need a spell in opposition just to balance the books.
Remember when ministers promised £9,000 fees would be "exceptional"?
There is much potential for Cable to work constructively with Ed Miliband.
This year's Chatham House survey reveals fundamental divisions between Tory and Lib Dem supporters.
Lib Dem praised Miliband's conference speech as "one of the best arguments for social democracy".
After Cable's intervention, the party needs to resolve its policy differences.
Miliband confirms that he wouldn't form a coalition with Clegg. But could he work with Cable?
Clegg's small army of political advisers has failed to halt the slide in his poll ratings.
Such a deal would satisfy neither supporters nor opponents of the coalition.