I don't have any actual knowledge, but think it would not be possible for her to have been a mayoral candidate in New York City. First of all, each borough (Manhattan, Bronx, Brooklyn, Queens, and Staten Island) has a borough president, not a mayor, although there is a mayor of all of New York City. The real show stopper, though, would be that women weren't allowed to vote until about 1920, so how could she possibly have been a candidate for office?