This article contributes urban politics literature on local democratic practices by studying mayors in one region of the world – Latin America – who in the last couple of decades have gained more prominence as political actors. This is primarily because decentralization as a popular trend has given local governments much more power, authority, and responsibility. In many cities across the region, we can point to mayors who have used their authority to do important things, including opening the budget to new forms of participation and providing services that are tailored to local priorities. In this article, however, we emphasize the opposite problem: mayors who govern using informal political practices that might be characterized as undemocratic.