I'm a little up in the air on that.
I can see it going both way. Raider fans as most ppl know are a crazy ride or die type of bunch. So I can see the hardcore fan base still supporting them while they are in Oakland and even when they move to Vegas.
But....
I can also see the reverse. I can see the core fan base saying fuck you for screwing us over for a second time by moving to a new city. First L.A. and now Las Vegas.
The majority of the Raider fans I know here in L.A. are still planning to support them like nothing ever changed.
So it will be interesting to see how it plays out