Republicans aren't selling specific policies so much as they are selling an attitude and a worldview ... that makes it easier. Then there's also the fact that any time a Republican hack goes on TV he knows there's a call-in number to get the talking points; this is not true for Democrats, as far as I know. And finally, it helps to actually be governing. I mean, I know much more about Bush administration policy than the Democratic alternative, because the former is happening while the latter is merely words.