Politics is not rocket science. You have one party led by a deeply unpopular, unapologetic right-wing ideologue whom its presidential candidates nevertheless decided to embrace. You have another party that has spent most of the past quarter-century undergoing the painful but necessary process of taming its own ideological excesses and tacking to the center. As a result, it now boasts appealing, mainstream candidates with pragmatic policy proposals for addressing real problems. What, exactly, did people think was going to happen?