It is improbable, first, in that his campaign got off to such a terrible start that his resurrection at this late stage, just in time for the Iowa caucuses in January, is a minor psephological miracle.
Those psephological facts of current political life will have to be squared with the Lib Dems' electoral strategy - which so far has relied on reaping the twin benefits of an unenthusiastically supported government and a deeply disliked opposition.