Not some Liberal Democrats it seems! Nick Assinder relays an anecdote from Charles Kennedy himself (BBC News: Commons Confidential: December 2007) about how he once made a surprise visit to a constituency, only to find that the candidate didn't need him for an obligatory joint photo.
The unnamed candidate had instead resorted to other means - by using a photo of himself with the Madame Tussauds waxwork of Kennedy.
So do the Lib Dems really need a living leader? They could always just get an immobile lifeless object to stand in instead.