Really, really, REALLY tired of every time a Lib Dem has any airtime, the only thing the interviewer keeps asking is what the party would do in the event of a hung parliament.
Get. this. through. your. heads.
IF one was generally supportive of the Conservative party, they would join the Conservative party. IF one was generally supportive of the Labour party, they would join the Labour party. (Though why anyone would want to do either is beyond me).
The Liberal Democrats do not exist as some organisation who just wait to see who they can lend their influence and expertise to. They're a party in their own right. In case you haven't noticed, they have a fully costed manifesto based on their own guiding principles and liberal instincts. Their own agenda.
Whether the Lib Dems are the third party, the second party, the outright winners or partners in a coalition, what they will do is the same as they do in those different positions at different levels all over the country - they will push for the reforms that make taxes fairer and greener, politics more accountable and less paternalistic and corrupt, and individuals freer to make their own choices over their own lives.
It's simple enough to understand, media goons! Think of some new questions, we've had enough years of the tired rehashing of this one. Or better yet, try asking Labour and tory talking heads whether they would go into a coalition with each other. It has to be said, those patronising authoritarian stuffed shirts all have more in common with each other than they do with any of my friends...