Americans vote as if they are shopping, and Barack Obama has many of the things people are looking for in a home appliance. Let’s be honest. That’s what a president is to most Americans. It’s what they put in their living rooms (via their tee-vee) for most dinner hours for four years. Something you’re going to live with that long, you want it to go with your sofa. His voice is pleasant, his frame is lean. He’s young and fresh. It doesn’t look like you’re buying a lot of extra complexity you won’t need — buttons that do you-know-not-what. But not so simple that it looks like you’re not sophisticated. Just enough power, without lots of do-dads. Obama is an iPod of a candidate.