If the weather's bad, we'd hear something like

Edwards' grimly efficient army of union bosses, tree-huggers, and out-of-state class-warriors managed to drag their base out to the caucuses while Clinton and Obama supporters, happy with either of the frontrunners, stayed off the treacherous roads.

If the weather's good, try

Most Democrats, equally happy with either of the front runners, chose to spend the gloriously springlike day outdoors, leaving only Edwards' supporters to be frogmarched to the caucuses by a grimly efficient army of etc etc etc

And if the weather's so-so they'll come up with another lame rationale that has nothing to do with populism. And if they can't stifle the populist message they'll do their damnedest to select, or if necessary arrange, some bit of nastiness at the Edwards victory celebration with supposed-JRE supporters that are clearly crass &/or nasty &/or bloodthirsty &/or smell bad, & every MSM network & Far Wrong screaming head will play the clip of that over&over in the ensuing days to make JRE seem like the leader of a lynch mob, the same way they took Howard Dean's shouting over the crowd & turned it into The Scream.

John Edwards has to know that a win in Iowa will be more like El-Alamein than Midway--not (in Churchill's words) "the beginning of the end, but perhaps the end of the beginning." The craporate wing of the Democratic Party won't give up that easily. It'll be one battle after another, getting worse all the time, all the way through primary season--& probably beyond, when the DLC-riddled DNC proceeds to turn its back on the Presidential ticket in favor of Congressional races where its favored flunkies are running...