Let Alex explain why this poster works and is so spoofable
Somehow, that poster seems almost designed for satire. There are excellent reasons why it works so well; it’s possibly the most stylised example of a political advert I can think of. In a sense, it’s a movie – not at all original, but highly competent in a limited way, and therefore a perfect subject for parody. You only need to identify a small number of controls, or variables, that define it, in order to produce a message that matches the requirements of the format perfectly but has an entirely different payload.
(Yes, he does think a bit too much about these things, but that makes his blog a must read…)