I'd bet anything that Westchester would vote in favor of legalization. No similar area in any state that has voted on it voted against.
I can't remember where exactly I read this, but I'm pretty sure that pot polls better among white people than it does among minorities, so I don't think this is necessarily just suburban panic (despite of course the fact that the effects of criminalizing weed fall heavier on those groups). I'm sure there's a larger-than-you-think cohort of older blacks and Hispanics that mostly just still consider all drugs to be a scourge to be fought, and don't make the distinction between all-but-harmless weed and actually-harmful harder stuff.
Probably it.
Eh, if the crosstabs are right (a pretty big if of course) then my speculation is not quite correct, and the "scared suburbs" theory might have more credence. Full legalization is underwater in all of city/burbs/upstate, but it's worst off in the burbs and better in the city and upstate. As for race, whites and blacks are almost identical whereas Latinos are a few points more likely to oppose legalization.
The expected correlation of younger people supporting it at much higher rates does, indeed, hold.