Anonymous
I can see that adjacent red and blue states might be at war but it seems unlikely that adjacent states of the same predominate political persuasion would be at war.
What you describe would a siege or maybe all out chaos. Better to just stay indoors for a couple of months until many/most people die off. Food wouldn’t be a problem unless you had to go outdoors to cook it. You could setup an above ground pool in your garage for water storage. Replenish with rainwater capture. Make sure you have enough plastic bags for your honey bucket. Heat and cooling would be a problem during the wrong time of year. Of course something like this would only happen in winter or hot summer.