[AccyMad]

Unfortunately just because someone has become disillusioned with their own club, as I believe is happening regularly at Rovers, it doesn't mean they'll automatically defect & start supporting a different team.
Even if they stop attending games at Ewood I'd imagine the majority would still be supporting their team from their armchairs - takes a hell of a lot to abandon your team even if you don't agree with the way the club is being run.