Just a couple of weeks ago, Republicans were popping champagne corks. Words such as “landslide” not only passed their lips but actually found their way into print. No longer. Things change. Of course, they could change again, and again, before November 2004. But for now, the sounds of clinking champagne glasses have been replaced by jangling Republican nerves.... Things may change again, but you won’t hear much landslide talk for a while. And the champagne is back in the cellar.