But as David said earlier, Labour's osciallating stance towards the Lib Dems - lofty sneers one minute, sickly grins the next - is hardly convincing. And neither is the timing. If Labour had been urging tactical voting a few weeks ago, then it would have seemed just as cynical, but perhaps not quite so opportunistic as two days before the election. The result may be to further put people off the whole process. Or - who knows? - to mobilise the Tory vote.
In the meantime, I'm sure the Lib Dems are looking on with some degree of anguish. Having Ed Balls calling on people to vote for your party does rather tarnish your "new politics" credentials.