Want to know what a stranger’s political leanings are? There is a simple question that may yield that information: Ask them what the term Swiftboating means. They don’t even have to provide a well-formed, grammatical definition; rather, the answer you seek lies in the sense of whether it represents something positive or negative to them. If they respond with something like this: “a harsh attack by a political opponent that is dishonest, personal, and unfair,” which is the Wikipedia definition, then you should suspect you are dealing with someone whose politics lean left, at least to the extent that they...