Think about it this way: Wouldn't a lot of Republican US Senators and HOR members support Jeb Bush? And don't they all have donors who bought and paid for them? That's got to be at least 10% of registered Republicans, I'd think.
I see your point, but its hard for me to imagine that number when none of them speak up. But I guess time will tell. If I just saw even the occasional post in support of Bush on ANY forum, not just Free Republic, I would accept those numbers without a second thought.
But I see no support and hear no support. Its crickets.