According to the empowerment hypothesis, minority politicians encourage minority participation. The relationship between representation and participation has been extensively analyzed for several ethnic minorities and women, but there are no studies for indigenous populations in Latin America. This paper evaluates the link between descriptive representation and electoral registration of Mapuche, a deprived indigenous minority from the South of Chile that is as large as ten percent of the total population. We implement a panel estimation that controls district effects using a national dataset of more than three million new registrations in Chile for five municipal elections. We found that Mapuche mayors are significantly associated with higher Mapuche participation during the first year of the mayoral period. Since registration in Chile occurs throughout the representatives’ term, and we use registrations long before the next election, our evidence suggests that office-holding affects participation by channels other than electoral campaigning. To shed light on the channels, we describe the symbolic and substantive mechanisms used by Mapuche mayors to empower their communities.