The Liberal Democrats are launching their election manifesto this evening, with a major pitch for the youth vote. Among their proposals: a new rent-to-own scheme for first-time buyers, the reinstatement of housing benefits for young people and cheaper bus travel for 16 to 20-year-olds. But, after the tuition fees fiasco during their spell in coalition with the Conservatives, can the Lib Dems really hope to rekindle the passions of the young?