Why has turnout in NYC mayor elections been declining for decades?

[pikachu]

I agree that turnout is s*** though it’s by design bc of elections being off-off year with the real action often being in the June Democratic primary, but the three higher turnout elections you cited were some of the few since WW2 which were seriously two-party contests. That being said, immediate postwar NYC was prob at its least transient bc of America’s abnormally low immigration in that era, while also having institutions like unions since the city was in its social democratic phase.

(But tbh I don’t see the point of this question unless you’re comparing it to other major cities that have similarly scheduled elections.)