One reason to worry if you're an Obama supporter is that in spite of the substance of Republican philosophy, very much in evidence in McCain's history and platform - the predilection for war, the reluctance to govern for the common good, the reflexive fear-mongering and "values" pandering - Republicans are now trying to co-opt the Democrats' message. You hear a lot about "change" and "cleaning up Washington" from the McCain campaign. You've got to sort of admire the nerve. They're skimming the cream from the top of Obama's cup and dumping it into the cold bottom of theirs, with apparent impunity. Every grand and beautiful thing that Obama says - no problem, they'll just say it, too. I like to imagine that one of Karl Rove's lackeys, now working for McCain, had this revelation after weeks of "Curse you, Barack Obama! You're so good!" fist shaking. Eureka. Never mind that bringing change to Washington means changing eight years of grotesque mismanagement by George W. Bush and the (until very recently) Republican Congress. Like so many Machiavellian tactics, this one has an infantile simplicity at the heart of it; it's like children pathetically parroting each other's insults. "Say anything and the people will believe it" cynicism has evolved, or devolved, to "if the people believe what the others are saying, say that." Again, a saving grace is that it reeks of desperation upon the slightest examination. All we really need from undecideds this November is for them to think twice.