It all makes sense now. Why else would Zell have started swooning so far to the right last year? The hit piece he did accusing the democratic nominees of being McGovernites one and all was the opening salvo in his courtship of Bush.
This would be smart for Bush, he can quash criticism that he's an ideologue by including a dem on the ticket and arguing that Miller is a moderate (Ha!- but the public doesn't know the difference) while continuing to push the idea that the rest of the dem party is as liberal as talk radio says they are.
The only problem with this theory is that Dick Cheney actually seeems to call the shots- but if his health really is failing, it would be a good theory. God knows Giuliani isn't going to play well under a national spotlight.