[quote=@TheUnknowable]
<Snipped quote by Comrade Doge>

A few gangs would have formed raider gangs, and their might be a few slavers, but I don't think a faction like the Enclave or even the Brotherhood would be around, especially since the Brotherhood is West coast.  You could make one up if you want.  Maybe a local military group or police group formed a faction to fight the gangs.
[/quote]

The Enclave as we know it definitely wouldn't, but iirc they had ties to the US Government. A sort of Proto-Enclave being around would be neat, maybe?