The themes of elections and democracy are on the order of the day. The purpose of this article is to contribute to this de-bate, from the historian's point of view, reflecting on the following question: when do elections and voting challenge democracy? By analyzing the political instruments that lead to representation, aiming at building an understanding of the challenges of Brazilian democracy, I argue that elections and voting challen-ge democracy when the degree of voter adherence to the democratic regime fluctuates and the values of a democratic political culture are not observable, and when the credibility of institutions is low and political parties are fragile.