The democratic party doesn't act in lock step with any particular media outlet, they don't have the president listening every day and tweeting in concert with them, and they don't have foreign troll armies instantly picking up a meme and promoting it instantly through social media.
Faux doesn't do this by themselves. It's what's been called the whurlitzer since nute launched his contract on america. A loud organ, made up of hundreds of screaming notes (none of which is pleasant by itself), all acting to the same music sheet. It gets so loud that other individual notes/messages can't be heard.
So yeah, the left as a whole isn't as effective as the right. But it isn't because of a weak party. It's because we have principles and don't act in conspiracy to get a false message out.
So we have a situation where one congressman makes a speech or gives an interview that should be heard. But it might get 15 minutes on various networks and then be forgotten. With faux, they will play it twice an hour for days, in concert with every other right wing news outlet and trump.
They coordinate. We don't. That isn't a party weakness.
