An alcalde-presidente is an alcalde (Spanish for municipal mayor) who also functions as president(e) of a higher administrative level.
Cases include: As Singapore is a city-state, its president can be thought of a mayor who also functions as a president of a higher (in this case, the highest) administrative level; however, the President of Singapore, though not entirely ceremonial, is not the city-state's chief executive.
The prime minister is.
This government job-related article is a stub.
You can help Wikipedia by expanding it.