Oh shit, I actually found some info on the contract. It expired on the 31st of July, which means that they likely have been negotiating for several months now. I cannot say how many months it would take to TA and ratify a contract, especially if it goes to mediation just like this last contract. It is very possible that their budget and salaries will be settled and a contract will be ratified before Mamdani is even elected. Also, their contracts are 8 years long lmao

Link to NYPD union contract highlights