Seems like a reasonable choice that will not hurt McCain. I’ll give a fuller reply once the choice is revealed by McCain.
Speaking as a Minnesotan, he won’t deliver Minnesota; in two elections, never got more than a 46.7% plurality. Wouldn’t have won either one without a third party splitting the lib vote. He’s only a year older than Obama, too; doesn’t add much gravitas. He will look like Quayle in the debate.