Tucker Carlson’s six years on Fox News seem to have artificially extended the life, and relevance, of cable news itself. While he was there, the top-rated host in the medium brought in an entirely new audience: young people, especially young men. He not only drew the largest number of viewers in the coveted 25-54 demographic, he took in the top rank for Democrats in that age group too. But even Carlson knew cable news was a dying model, one that had lasted longer than anyone expected, as he told me when I spoke to him for my upcoming book, Tucker....
