She certainly should have run for a city office, or state or federal legislative office representing the 5 boroughs in some way. Not because ladies need to climb the ladder. But because that’s clearly her where her concerns and interests lie. And her relatively narrow focus on the city, however well developed her understanding. Only helped to underline concerns that she was unqualified, or unprepared to run the whole state.
But she was never going to run for Mayor. For one thing current mayor Bill de Blasio has close to 3 years left on his current term. Nixon is a close personal friend of de Blasio, and her biggest bit of political experience is campaining for him and acting as a surigate for his administration.
de Blasio apparently pushed her to run for office. And is supposedly the one who suggested a run for Govenor. But then he made a rather big show of “not getting involved”. He refused to endorse, and would not campaign with her. Pretty much ghosted on the whole Govenor thing. Aside from dropping hints about how he needed to work with whoever won (hint Cuomo is vindictive hint hint).
The uncharitable read is that di Blasio pushed Nixon to run as a test case for his own eventual campaign for Govenor, think he term limits out as mayor after this one. And as a fuck you to Cuomo who has a very loud political spat going with the Mayor.