Well, I grant it's hard to quantify. It was recently reported that Fox had more viewers than CNN and MSNBC combined, but that's TV.
On the internet, it's a very different story. If you block left-leaning news outlets on Apple News, your front page may contain nothing at all. Google News has a permanent section devoted to leftist "fact checkers". Their "beyond the headlines" section currently displays the NYT, BBC, Vox, Guardian, Atlantic, WSJ, Slate, Verge, and AP.
On the internet, it's a very different story. If you block left-leaning news outlets on Apple News, your front page may contain nothing at all. Google News has a permanent section devoted to leftist "fact checkers". Their "beyond the headlines" section currently displays the NYT, BBC, Vox, Guardian, Atlantic, WSJ, Slate, Verge, and AP.