I'll throw my 2 cents in here. This is merely conjecture, mind you, developed after reading several of the posts here. Connecticut (I'm sure there's evidence to the contrary, so no acidic retorts) seems like a good bet based on their death penalty. There is an episode (no, I don't know the name, I have it on disc though) where Bart befriends Ralph and they visit the old Springfield prison. There is an electric chair in obvious disuse for some period of time (may just be because the prison closed, again this is all hypothetical). Researching the death penalty shows CT changed its method from chair to injection in 1995. A more obscure bit of proof for this is the comment Dr. Hibbert makes to Marge in another episode: "...if this was my last meal, I'd tell the warden Bring on the lethal injection!". This episode aired in 1996. Minor details, but another fun line of thought to go on. I'm personally of the camp that it's a composite of several states.
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I'll throw my 2 cents in here. This is merely conjecture, mind you, developed after reading several of the posts here. Connecticut (I'm sure there's evidence to the contrary, so no acidic retorts) seems like a good bet based on their death penalty. There is an episode (no, I don't know the name, I have it on disc though) where Bart befriends Ralph and they visit the old Springfield prison. There is an electric chair in obvious disuse for some period of time (may just be because the prison closed, again this is all hypothetical). Researching the death penalty shows CT changed its method from chair to injection in 1995. A more obscure bit of proof for this is the comment Dr. Hibbert makes to Marge in another episode: "...if this was my last meal, I'd tell the warden Bring on the lethal injection!". This episode aired in 1996.
Minor details, but another fun line of thought to go on. I'm personally of the camp that it's a composite of several states.