There are two, primary things that have fueled Mitt Romney's campaign -- his image as an economic guru and the idea that he's the most electable of the Republican nominees. But there are joint arguments that call the latter into question. First, there's the theoretical argument -- made today by Red State's Erick Erickson in a blistering, bruising post -- which claims that Romney is a certain loser against Barack Obama. Mitt Romney, on the other hand, is a man devoid of any principles other than getting himself elected. As much as the American public does not like Barack...