You don’t know that.
I don’t watch TV news, except at the gym. There, I see CNN and MSNBC. Both networks are 100% in the tank for Clinton, and obsessed with destroying Trump. Fox is more mixed, but not in his corner. The same is true for CNN on the internet.
The coverage is unrelentingly negative, and is beginning to define
Trump for some voters who are undecided.
Once the image of Trump is defined, it will be very hard to undefined it.