IIRC, FOX has more viewers then all the Marxist networks put together.
I use to see the figures on Drudge, but I do not see them now.
I think the advertisers are going to advertise where they have the most viewers.
Yes, advertisers look at the demographic and put their money where they can achieve the broadest reach among specific demographics.
This flap over the Glen Beck boycott was pure twaddle because most on the list were consumer products/food/cosmetics that hadn’t advertised on Beck in the first place.