The culture of the region should be discussed as well. I'm not sure the specifics of it for the 80s, but I do know what it is now.
Outside of the cities at least, which are all depopulated anyway in this timeline, it is extremely Conservative. People are for small government, very pro gun and there is a very strong gun culture and it may even be a majority of families that hunt, and they honestly believe that anything left wing is socialist. Basically, anything Liberals may think they're only stereotyping Conservatives as saying or doing, I have seen first hand and it is true. The people are very nice besides that, but their politics are vitriolically Conservative. I think I relayed the story before about how my town's Republican mayor (allegedly) posed for transvestite porn, and (allegedly) was involved in drugs and (allegedly) had a daughter involved with them, and so far as I know he got reelected.
A post-war Upstate, and especially one where it loses the metropolitan populations, is going to be very Conservative. And honestly that could become problematic in many ways. An example I'll give is that my area, at least every other year or so, has at least one day where the powerlines freeze and fall over and we're without electricity for days. Years back, they offered to put the powerlines underground, which would have solved all those problems. It would have cost everyone 1 more dollars, just 1, in taxes, and they refused. Imagine how much money is has cost over the years to maintain and fix those powerlines ever time they went down. Our infrastructure (roads, bridges, etc) is the same sort of deal.
I don't know how they'll deal with the situation afterward, because at least some money is going to need to be spent in a serious way.
It is also in the Rust Belt; industrial jobs during this period are steadily going away, and the region is very seriously suffering as a result. That made people move away, it harmed the local economy, it hurt small towns because a worse element moved in and crime is linked to lower pay or joblessness, etc. That's not just the cities; that's also all these small towns with factories that relied on those jobs that went away. I do wonder how that will be affected after the war, because those factory buildings would still stand, and they'd offer the area the chance to have an industrial capacity and whatever is lost out of Buffalo and Rochester could be made up for by those small town factories.
There is also a resentment towards New York city, which I would prescribe to economic reasons; Albany is concerned with New York City, and all the tax money goes to the city rather than things like helping Upstate, building infrastructure, keeping roads in good condition, etc. I don't think even the fact that NYC is Liberal whereas a lot of the state is Conservative even matters. I do think it's all very much a feeling that the city takes away focus and takes away resources and gives nothing back, is the reason for the high cost of living, etc. And feel free to argue that New York City actually helps the region; that's not the point. The perception is the point.
That's all well enough as it is, because it doesn't hurt anything, but I think when you see refugees from New York City and Southern New York start to come into the Upstate Region, that will become a problem. I think the locals will see them as outsiders, despising whatever differences they have and the ways they act, believing and hating with an almost racist passion the New York City stereotypes, and viewing them as stealing jobs and resources. I think you would see fighting and riots and violence if there are enough citydwellers left to swamp the north (I'm not sure how many people survive from the south in the P&S universe). Hell, you'd probably see similar things to anyone who is perceived as an outsider.
EDIT:
There's also a lot of Confederate stuff up here. People fly Confederate flags all the time, wear Confederate symbols, and there's a Confederate reenactment group up here. I don't know when Confederate stuff just became rural instead of Southern.