Liberal Democrats struggle with power

Political blogger Iain Dale lucidly summarises the problems of the Liberal Democrats here. Locally, Stockport Council is facing a steady stream of defections as elements within the ruling Lib Dem group drift away from having to impose cutbacks. I'm pleased none of the Marple councillors are defecting. But it raises the question, why commit to a political party if you aren't prepared to take power, locally or nationally?