Although there have been several attempts to study the dimensions of the Emerging Church movement (ECM) through close observation and survey data, we know little about its diffusion into American religious cultures. We undertook this project by attempting to capture whether Christian clergy thought about the movement and how consistently they considered it. Our analysis of survey data from several denominations suggests that the ECM is less well known among the clergy they are reacting against (evangelicals). Opinions turn not on partisan identity, but on religious authority, which is precisely the ground on which the ECM presents its challenge to evangelicalism. In this way, the ECM appears to be following a path paved by the decline of denominationalism