Here is the sentence.
The President took a drubbing from much of the press, which had breathlessly reported that a deal was in the bag.
I don't know the exact meaning of the phrase "much of the press".
I guess maybe the President had too much pressure from the press, so they're making him weak.
So I refer to a dictionary and found the closest usage is:
If you do not see much of someone, you do not see them very often.
e.g. I don't see much of Tony nowadays...
But it seems not to match the context well. Could you tell me the usage of "much of the.."?