I do stress: if you are a natural Labour voter or sympathiser, stress that- as Unity says, it may make the point count for more with Mr Miliband. But this campaign has always accepted support from people of all (democratic) political views, and from largely apolitical people too, and they’ve made a very great contribution. This isn’t a left-liberal campaign, although I would say that any sincere left-liberal should support it.

Also: as Unity says, be polite. If anybody insults Miliband, he is that much less likely to listen to our arguments. Rudeness may gratify your feelings but it will not save a single Iraqi.