This essay constitutes an enquiry on the relationship between demography and vote in the 2014 Brazilian presidential elections, using, as analytical units, the neighborhoods of three state capitals: Belem, Recife, and Sao Paulo. The demographic and electoral data analysis employed different research techniques, such as thematic cartography, exploratory data analysis and multivariate analysis. The results unveiled a coherent and statistically significant linkage, at the neighborhood level, between demographic structure and voting patterns in the three main presidential candidates: Aecio Neves, Dilma Rousseff, and Marina Silva.