One of the interesting things accomplished by John McCain's selection of Sarah Palin as his running is the effective neutralization of Joe Biden's much-vaunted "attack dog" persona.
Well, at least until Obama praises her and says it's a great sign of positive change. 'One more hit against that glass ceiling,' I believe, were the words.
It wasn't as stupid a selection as it sounds like. But Obama isn't as stupid as McCain thinks he is, so it's kind of a wash. I'm betting that Biden can find a way to outclass her in a head-on debate without coming off as patronizing, and I'm betting that Americans are clever enough to recognize that a state senator from Chicago trumps the mayor of a small Alaskan city.