I've been sort of struggling with whether to write this post, but after Daniel Larison and Matt Stoller both toed around the point while offering their takes on Webb, I guess it's worth doing. Let me start by saying that this isn't really about James Webb. He is who he is, and this post has nothing to do with his positions on the issues. But then, nor does most of the excitement around his candidacy. Rather, Webb represents something of almost transcendent importance to some post-Bush liberals: The opportunity to out-tough the GOP. A candidate who's not only a liberal, but in no way a sissy. He is the daywalker, combining a progressive's positions with a southern militarist's affectations. But this is not a sustainable approach to politics. Democrats can't out-tough the GOP. It's possible that James Webb can do it. But he's sui generis; a Democrat who can win at politics when played under Republican rules. Democrats love those candidates, because they think of presidential elections as an away game, and they're endlessly hunting for the candidate who plays best under those conditions. But Democrats can't win at politics when played under Republican rules. Progressivism can't prosper when politics is played under Republican rules. It needs to make its own rules. Barack Obama's effort to do exactly that has been, by far, the most exciting element of his campaign. His policies -- particularly his domestic policies -- have not been half as innovative as his politics. But his willingness to double down on opposition to the gas tax holiday, to battle back on negotiating with dictators, to respond to attacks by pressing the point, has been genuinely exciting. And though he has been confident and even aggressive in all of this, he has not been "tough." He has not pretended to go shooting, or driven on to Jay Leno's show on Harley. He's essentially been making his own rules.