Well, let's see. Getting involved with local politics is time-consuming and dull--but it has a real effect on who's going to run for president. Simply calling congressman and letting them know what you feel they should vote for isn't a bad idea either. Believe it or not, they often listen.
Or, as I said, we can all move to Cuba, where Bush is working on installing a democracy. Of course, it would be nice if he tried it here first.