The executive branch is headed by a popularly elected mayor. The office is held by Miguel Romero Lugo  who won in the 2020 general election. Miguel Romero Lugo took over from Carmen Yulín Cruz, who was elected at the 2012 general election. Before her, Jorge A. Santini held the position for 12 years. In addition to running the city's day-to-day operations and supervising associated departments, the mayor is responsible for appointing a secretary-auditor and a treasurer. San Juan's Municipal Legislature is made up of 17 municipal legislators, elected at-large, which represent the city's population.