What's the difference between a president and a can of Pepsi? When it comes to winning elections, the answer is very little. The 2008 election was not about issues, it was about image. Not just the image of the candidate, but the image of his brand. In marketing terms, a brand is not just a label, it's the way that the customer is meant to perceive the product and interact with it. Take the can of Pepsi. It doesn't matter what's actually in the can, you don't have access to the full list of ingredients anyway. And if you did,...