While we do have an idea of what the leadership of open collaboration communities is responsible for at a high level, we have little knowledge of what these leaders actually do. Similarly, in an online context we understand pieces of the process managers and leaders go through to be elected, but their change in behavior once they become a manager remains unexplored. What behaviors do these leaders engage in that is different from a typical contributor to the community? How can we empirically distinguish which behaviors are characteristic of a successful leader vs. an unsuccessful leader? We examine leadership promotion and performance in Wikipedia, a prominent open collaboration community. This study extends previous work on governance and leadership by developing and validating a more complete measurement model of leadership performance in an open collaboration community, and proposing a testable model of leadership promotion and performance within this context.