It's a good bet right now that Barack Obama will be a one-term president. The enthusiasm that once shielded this hyphenated American has dissipated. His supporters, although still numerous, have discovered that he lacks Bill Clinton's centrist instincts, and even his charm. The anti-Bush mania that swept the country from 2006-09 finally burned itself out. It's always possible that the Republicans will nominate a dud. That has happened so often that it should even be considered likely. Not since 1980 has there been an outstanding GOP candidate. But at this stage it's too difficult to predict the 2012 nominee, so...