What is any political campaign save a concerted effort to...

What is any political campaign save a concerted effort to turn out a set of politicians who are admittedly bad and put in a set who are thought to be better. The former assumption, I believe is always sound; the latter is just as certainly false. For if experience teaches us anything at all it teaches us this: that a good politician, under democracy, is quite as unthinkable as an honest burglar.