Your email address is used to log in and will not be shared or sold. Read our privacy policy. If you are a Zinio, Nook, Kindle, Apple, or Google Play subscriber, you can enter your website access code to gain subscriber access. Your website access code is located in the upper right corner of the Table of Contents page of your digital edition. Sign up for our email newsletter for the latest science news. People constantly want to know how to explain political conversions—cases in which individuals have changed political outlooks, sometimes very dramatically, from left to right or right to left. You see, Uncle Elmer is less interesting to me—and in some ways, less interesting to the emerging science of political ideology—than the committed Democrat who became strongly supportive of George W. And notably, none of them seem to have anything substantive to do with policy, or with the widely understood political differences between Democrats and Republicans.