After watching lots of political smut lately I have begun to realize something... you can criticize your own party much more effectively than you can the opposing party, where effectiveness is in convincing members of the targeted political party. Members of a political party tend to band together and support each other with an unquestioning loyalty. For example, if I am a democrat and I say that Bush has a bad foreign policy, then republicans will usually dismiss my criticism as being biased. But if I say that as a republican then they are much more receptive. The same is true the other way around. You can exploit this to convince people of your political opinions by simply registering as or claiming to be a member of the targeted political party. I have tried it and it works.