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.
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