Last night on Fox News Channel, political consultant and author Dick Morris presented an intriguing metaphor for the GOP primary. Basically, Morris said, one should think of the Republican race as a tennis tournament. On the center court, you have Giuliani and McCain competing for the moderate and Republican-leaning independent vote. Giuliani's winning that one, Morris says. On another court, you had Huckabee and Brownback competing to be the candidate of the Christian right. Huckabee won that match, and has advanced to the third court, where he, Romney, and Thompson are in a three-way match (yes, the metaphor breaks down a little bit here - but use your imagination!) to take on Giuliani in the center court. One thing about Morris's metaphor, though. He said McCain was losing badly to Giuliani. That's true, at least so far. But McCain turned in a stellar performance at the recent debate in Florida. There's an argument for his candidacy no one else has: it increasingly looks like he was right about the central issue of our time, the war in Iraq. It's true McCain's candidacy faces serious problems. But no one should count him out of the finals just yet.