Considers the likely future of secularism as a fault line in American politics. Secularism is gaining ground, which suggests that it will feed further political polarization, and perhaps even lead to a confessional party system based on religious–secular differences. We also speculate that the conditions may be right for the creation of a new political movement – a Secular Left to parallel the Religious Right. Such a movement is not a certainty, however. Will the strategic candidates seek to mobilize the growing secular population? The chapter, and thus the book, concludes by suggesting that growing secularism need not mean more polarization, as politicians could seek common ground between religionists and secularists.