I’d second John’s point. This is the last oppourtunity McCain will have to make the case for divided government to a large national audience. McCain needs to hammer home the fact that Obama has never seriously opposed his own party, and as President would simply be a rubber stamp for whatever legislation Democrats dream up. It’s also a way to go after Obama’s inexperience, as a man with a thin legislative record who merely went along with whatever the boss Harry Reid wanted. Also, in contrast to many of my fellow conservatives, I don’t think this is a good time for McCain to bring up Ayers and Obama’s pattern of radical associations. McCain is simply not comfortable going on the attack on such grounds, and he really needs to beat the grumpy old man rap. Dave Weigel also has some good advice in the same symposium in which John participated.